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Finasteride 0.1%, minoxidil 5%, tretinoin 0.01% topical hair loss foam
from£29.99
A personalised topical hair loss foam containing finasteride 0.1%, minoxidil 5%, and tretinoin 0.01%. Designed for adults who need a comprehensive three-ingredient approach targeting the hormonal, circulatory, and absorptive drivers of pattern hair loss — in a format that is easy to apply and straightforward to build into a nightly routine.
The foam does not drip or run, dries faster than a liquid, and removes the practical friction that causes people to skip treatment nights.
Finasteride 0.1%, Minoxidil 5%, Tretinoin 0.01% topical hair loss foam
The problem with hair loss
Hair loss is easy to dismiss — until it happens to you. The visible signs are familiar: thinning at the crown, a wider parting, a hairline moving in the wrong direction. The less visible impact is often harder to carry. Confidence drops. Self-consciousness builds. This is where the finasteride 0.1%, minoxidil 5%, tretinoin 0.01% topical hair loss foam comes in.
The problem with standard treatments
For many people, the frustration goes beyond the hair loss itself. It is about the experience of trying to treat it.
Standard topical hair loss liquids drip. They run down the forehead before you have worked them in. They take too long to dry. After a few weeks of product on the pillow or residue on the collar, skipping a night starts to feel reasonable.
Skipping nights is exactly what stops hair loss treatment from working.
Why this three-ingredient combination?
Pattern hair loss has more than one driver. DHT miniaturises follicles through the hormonal pathway. Poor scalp circulation and reduced follicle activity accelerate visible thinning. And without efficient absorption, even the right active ingredients may not reach the follicles that need them most.
This formula addresses all three dimensions at once. Finasteride 0.1% targets the hormonal driver directly. Minoxidil 5% stimulates follicle activity and improves scalp circulation.
Tretinoin 0.01% enhances absorption and supports the follicle environment. Together, they form a clinically considered three-ingredient approach — not a default combination, but a formula selected because clinical assessment and, where used, TrichoTest results indicate this is the most appropriate treatment for the individual.
Why foam changes things
The foam does not drip. It does not run. It stays where you put it, spreads evenly with your fingertips, and dries quickly. Consistent, accurate nightly application becomes straightforward — without the mess or the wait that causes so many people to skip nights and undermine their treatment.
With three active ingredients working together, getting the formula where it needs to go every night is not a small consideration.
Why 0.1% finasteride?
The finasteride concentration in this formula is 0.1%. This is a clinically considered mid-range compounded strength. The prescriber selects it when clinical assessment indicates this is the most appropriate concentration — whether as a starting point for patients whose profile suggests a moderate anti-androgen requirement, or as an ongoing concentration supported by TrichoTest results. The concentration is not a default. It is a clinical decision made for you specifically.
A medically responsible route
At Courier Pharmacy, treatment starts with a proper assessment. Suitability is checked. The decision to prescribe this compounded foam is a clinical one — based on your scalp, your history, and your goals.
Prescription-only compounded topical hair loss foam
Easy-to-apply format that stays in place and dries quickly
Finasteride 0.1%, minoxidil 5%, tretinoin 0.01% — a clinically considered three-ingredient combination
Reviewed for suitability by a UK-qualified prescriber
Additional information
Quantity
1 x 30ml, 2 x 30ml, 3 x 30ml, 4 x 30ml, 5 x 30ml, 6 x 30ml
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What is Finasteride 0.1%, Minoxidil 5%, Tretinoin 0.01% topical hair loss foam?
This compounded topical hair loss foam contains finasteride 0.1%, minoxidil 5%, and tretinoin 0.01% in an easy-to-use foam base. It is designed for adults with pattern hair loss who need a comprehensive three-ingredient approach — targeting the hormonal driver of hair loss, supporting follicle activity, and enhancing active ingredient delivery — particularly those who have found standard liquid products messy or difficult to use consistently, or those whose clinical profile indicates this combination in a foam format is the most appropriate starting point.
Three active ingredients working together to target DHT, support follicle activity, and enhance absorption
Foam format is lighter, cleaner, and easier to apply than traditional liquid solutions
Finasteride at 0.1%, minoxidil at 5%, tretinoin at 0.01% — a clinically considered combination
May suit people with androgenetic alopecia who need a comprehensive approach in a format that is easier to use consistently than a liquid
Safe prescribing still matters — hair loss treatment needs proper screening, review, and follow-up
Part of the Gro hair loss range, designed for personalised treatment at less than £1 per day
Pattern hair loss is personal
Pattern hair loss is common, but that does not make it any less personal. Many people first notice extra shedding, reduced density, or a hairline that seems to be quietly retreating. Many then try a product that does not match their biology, see little result, and quietly give up — not because treatment cannot work, but because they were never on the right treatment to begin with.
A formula for people who need a comprehensive approach in a practical format
This foam is aimed at people who need a carefully considered three-ingredient approach — addressing the hormonal, circulatory, and absorptive drivers of pattern hair loss — in a format they can genuinely build into a nightly routine without mess or delay. It is particularly relevant for those whose prescriber has identified this combination as the most appropriate treatment, those whose TrichoTest results indicate a moderate anti-androgen requirement alongside a strong minoxidil response profile, and those who have found liquid formats too impractical to use consistently over time.
The goal of treatment
Hair loss affects more than appearance. It chips away at confidence. It makes ordinary moments feel oddly loaded — a changing-room mirror, a photo taken from behind, a windy day when you would rather not think about what is visible.
The goal of treatment is not perfection. It is to slow loss, support healthier growth, and help you feel more in control — with a plan that addresses the full picture and a format that makes nightly treatment something you can actually sustain.
Foam benefits and ease of use
Foam stays where you put it
Unlike a liquid, foam does not run down the neck or drip onto the forehead before you have had a chance to work it in. You can dispense it directly onto the scalp or onto the fingertips, then apply it precisely to areas of thinning. Less waste. Less mess. More control. With three active ingredients working together, precise placement matters — and foam delivers it.
Foam feels lighter on the scalp
There is no strong alcohol smell. No prolonged wait before getting into bed. No residue transferring to the pillow. Some people find this difference small. Others find it transformative. Either way, it removes a set of daily friction points that have caused many people to abandon their routine — and with a three-ingredient formula, abandoning the routine is particularly costly.
Adherence is everything
A three-ingredient treatment that sits on the shelf because it is too awkward to use every night is not a treatment that works. If foam makes application quicker, cleaner, and easier to fit into your existing evening routine, that practical advantage compounds over time — in exactly the way good hair loss treatment should.
Why the foam vehicle matters
The foam base is clinically relevant as well as practically convenient. It sits lightly on the scalp, dries faster than a liquid, and may reduce the practical friction that stops people applying their three-ingredient formula consistently — which is one of the most important factors in whether any hair loss treatment succeeds over time.
Why compounding?
What compounding means
Compounding means a medicine is prepared to order by a licensed pharmacy for an individual patient. It is not a mass-produced one-size-fits-all product. In the UK, this sits within a regulated framework and should only be supplied when clinically appropriate.
Why compounding matters for this formula
Some people choose this compounded foam because no standard licensed product combines finasteride, minoxidil, and tretinoin in a foam format — and this specific combination, at these specific concentrations, delivered in a format that makes daily use achievable, is what their clinical profile requires. Others come to compounding because they want a clinically tailored three-ingredient approach in a foam format that removes the practical barriers that standard liquids create. Others want the clinical flexibility to adjust their formula over time as their treatment plan evolves.
Personalised medicine in practice
Hair loss is not identical from one person to the next. The right combination of ingredients, concentrations, and format for one patient is not right for another. Compounding makes it possible to prescribe finasteride 0.1%, minoxidil 5%, and tretinoin 0.01% together in a foam — a formulation that simply does not exist in any standard licensed product — when clinical assessment indicates that this is the most appropriate approach. The medicine is shaped around the patient, not the other way around.
Why this three-ingredient combination can be the right choice
Some patients need all three mechanisms addressed at once. Finasteride blocks the hormonal driver. Minoxidil stimulates follicle activity and improves scalp blood flow. Tretinoin enhances scalp absorption of the other active ingredients and supports the follicle environment. For patients whose TrichoTest results indicate both a moderate anti-androgen requirement and a strong minoxidil response via the SULT1A1 pathway, this combination in a foam format may be the most clinically efficient and practically sustainable starting point.
If the formula needs to evolve over time — increasing the finasteride concentration, or adjusting further — TrichoTest and clinical assessment will guide that decision. Compounding makes either path possible.
TrichoTest: personalising the approach
TrichoTest reduces guesswork. It is a pharmacogenetic test that analyses 26 genetic polymorphisms linked to nine key treatment pathways relevant to hair loss. Rather than prescribing from standard protocols alone, TrichoTest combines your genetic profile with your medical history to predict which ingredients, dosages, and delivery methods are most likely to work for your biology.
How the TrichoTest informs this formula
This three-ingredient formula draws on multiple TrichoTest pathways simultaneously. The sulphotransferase (SULT1A1) pathway predicts minoxidil response — patients with high SULT1A1 expression are strong responders to minoxidil and may benefit particularly from its inclusion at 5%. The anti-androgen metabolism pathway identifies how effectively a patient responds to finasteride — and whether 0.1% is the most appropriate concentration for their genetic profile. Tretinoin at 0.01% supports both by enhancing penetration and follicle health.
TrichoTest can identify all of these factors before treatment begins — allowing the prescriber to arrive at this specific three-ingredient foam formula with clinical confidence, rather than adjusting after months of treatment.
How the TrichoTest informs this formula more broadly
If TrichoTest identifies that a different finasteride concentration — lower or higher — would be more appropriate for the individual’s anti-androgen requirement, the prescriber can adjust accordingly. If results suggest that the formula is well-matched from the outset, treatment can begin with confidence that the ingredients, concentrations, and format are the best available match for the individual’s biology.
The nine pathways TrichoTest analyses
Prostaglandins and sulphotransferase — how you process minoxidil and latanoprost
Anti-inflammatory response — your reaction to glucocorticoids and immunomodulators
Anti-androgen metabolism — how effectively you respond to dutasteride, finasteride, and 17?-oestradiol
Circulation stimulation — response to vasodilators
Collagen synthesis capacity
Insulin-like Growth Factor (IGF-1) response
Vitamin absorption — A, B7, B9, B12, C, D, E
Mineral absorption — zinc, magnesium, iron, selenium
Antioxidant needs and oxidative stress profile
Beyond ingredient selection
TrichoTest also identifies nutritional gaps and metabolic factors that affect hair health independently of topical treatment. If genetic variants reduce zinc or iron absorption, the prescriber can recommend targeted supplementation alongside this foam formula — moving treatment from guesswork towards something shaped by your actual biology.
TrichoTest does not guarantee results, but it gives the prescriber better information to decide whether this specific three-ingredient foam formula is right for you, or whether something different would serve you better.
The Gro hair loss range
What is the Gro brand?
Gro is the compounded hair loss range created by Courier Pharmacy and Medical Mojo. It exists because hair loss treatment should not feel one-size-fits-all.
Some people want a classic topical liquid. Some prefer a foam — lighter, cleaner, easier to build into an evening routine. Others need an alcohol-free and propylene glycol-free base because their scalp reacts to standard excipients. Gro brings those options together under one brand, matching treatment to the person using it, not the other way around.
Each Gro product comes in a 30ml bottle designed to last one month. Every option costs £29.99 for up to three active ingredients — less than £1 a day.
Why Gro is different
Gro was built around three practical goals:
Choice of formulation: topical liquid, topical foam, or Trichosol solution (propylene glycol free and alcohol free)
Personalisation: single, dual, and triple-ingredient combinations across multiple concentrations
Better tolerability: every format is designed to reduce the friction that stops people from maintaining their routine
The three formulation types
Topical hair loss liquid — a traditional spray solution containing alcohol and propylene glycol. Well-established, with efficient scalp penetration. Chosen by patients who want a direct, familiar format.
Hair loss foam — lighter, faster-drying, and easier to apply without dripping. This is the formulation described on this page. Chosen by patients who want clinical results in a format that fits more easily into daily life.
Trichosol topical solution — propylene glycol free and alcohol free. Designed for patients with sensitive or reactive scalps who need a gentler base.
Ingredients used across the Gro range
Depending on the product selected, Gro formulations may include:
Dutasteride
Finasteride
Minoxidil 5%
Tretinoin 0.01%
These can be prescribed alone or in combination, and at varying concentrations, depending on the individual treatment plan.
Gro product options
The Gro range includes the following compounded hair loss options, each supplied as a 30ml one-month bottle at £29.99.
Dutasteride 0.05%, minoxidil 5% in Trichosol — topical solution
Dutasteride 0.1%, minoxidil 5% — topical liquid
Dutasteride 0.1%, minoxidil 5% — topical foam
Dutasteride 0.1%, minoxidil 5% in Trichosol — topical solution
Dutasteride 0.2%, minoxidil 5% — topical liquid
Dutasteride 0.2%, minoxidil 5% — topical foam
Dutasteride 0.2%, minoxidil 5% in Trichosol — topical solution
Finasteride + Minoxidil
Finasteride 0.05%, minoxidil 5% — topical liquid
Finasteride 0.05%, minoxidil 5% — topical foam
Finasteride 0.05%, minoxidil 5% in Trichosol — topical solution
Finasteride 0.1%, minoxidil 5% — topical liquid
Finasteride 0.1%, minoxidil 5% — topical foam
Finasteride 0.1%, minoxidil 5% in Trichosol — topical solution
Finasteride 0.2%, minoxidil 5% — topical liquid
Finasteride 0.2%, minoxidil 5% — topical foam
Finasteride 0.2%, minoxidil 5% in Trichosol — topical solution
In simple terms
Gro makes personalised hair loss treatment accessible and liveable.
You get a 30ml bottle for one month, £29.99 pricing, up to three active ingredients at a concentration chosen for you, and a choice of liquid, foam, or Trichosol alcohol-free and propylene glycol-free solution. If you want a treatment that fits your scalp, your treatment stage, and your daily life — not a generic protocol — the Gro range gives you more than one route without making the choice unnecessarily complicated.
This is a Prescription Only Medicine. You can request it from courierpharmacy.co.uk by completing a quick online consultation, reviewed by a UK-qualified prescriber for suitability and safety. If appropriate, Courier Pharmacy will dispense the compounded foam and deliver it discreetly.
Complete the online consultation
Prescriber reviews your answers for suitability and safety
Prescription issued if clinically appropriate
Dispensed and delivered discreetly to your door
If the treatment is not suitable, this will be explained clearly and the next best option may be suggested.
Summary
Prescription-only compounded three-ingredient treatment for pattern hair loss
Targets DHT via finasteride, supports follicle activity via minoxidil, and enhances absorption via tretinoin
Foam format is tidier, faster-drying, and easier to apply than traditional liquid solutions
Finasteride at 0.1%, minoxidil at 5%, tretinoin at 0.01% — a clinically considered combination
May help patients who need a comprehensive approach or who have found liquid formats difficult to use consistently
Good outcomes depend on consistency, review, and realistic expectations
Comes in a convenient 30ml bottle designed to last around one month, at less than £1 per day
Finasteride 0.1%, Minoxidil 5%, Tretinoin 0.01% topical hair loss foam — Active ingredients
Finasteride 0.1%
Finasteride is a 5-alpha reductase inhibitor. It reduces the conversion of testosterone to dihydrotestosterone, or DHT — the key hormonal driver of androgenetic alopecia in susceptible hair follicles. Unlike dutasteride, finasteride selectively blocks type 2 5-alpha reductase. At 0.1%, this is a clinically considered mid-range concentration — not a default, but a considered choice based on the individual's profile, history, and treatment goals.
Minoxidil 5%
Minoxidil is a topical vasodilator and follicle stimulant. It supports hair growth by prolonging the anagen (growth) phase of the hair cycle, improving blood supply to follicles, and stimulating follicle cells to produce thicker, healthier hair. At 5%, this is the standard compounded concentration for adults with pattern hair loss.
Tretinoin 0.01%
Tretinoin is a retinoid that supports hair loss treatment in two ways. At 0.01%, it enhances the scalp's absorption of the other active ingredients — helping finasteride and minoxidil penetrate more effectively to the follicles that need them — and it supports the follicle environment by promoting cell turnover and scalp health. It is used at a low concentration specifically to complement the other active ingredients without causing the irritation associated with higher retinoid strengths.
Why the foam vehicle matters
The foam base is also clinically relevant. It sits lightly on the scalp, dries faster than a liquid, and may reduce the practical friction that stops people applying their three-ingredient formula consistently — which is one of the most important factors in whether any hair loss treatment succeeds over time.
What is the Finasteride 0.1%, Minoxidil 5%, Tretinoin 0.01% topical hair loss foam used for?
Pattern hair loss in men and women
This product treats pattern hair loss, also called androgenetic alopecia. In men, this often appears as a receding hairline or thinning at the crown. In women, it may present as diffuse thinning or a widening parting. The aim is to support hair retention and encourage healthier growth where clinically appropriate.
The problems of hair loss
The practical problem is visible thinning. The internal problem is the loss of confidence that builds quietly alongside it. The deeper issue is that people should not have to feel dismissed or left to navigate treatment alone for something that so clearly affects daily life.
Who this formula is for
Some patients come to this formula because their clinical profile indicates that all three drivers of hair loss — hormonal, circulatory, and absorptive — need to be addressed simultaneously, and they want it in a foam format because liquid products have been too messy or difficult to use consistently. Others arrive because their TrichoTest results demonstrate both a moderate anti-androgen requirement and strong SULT1A1 activity, making this three-ingredient combination the most clinically efficient starting point. Others still come because standard liquid formats were simply too impractical to maintain night after night — and the foam removes that barrier. In all cases, a compounded three-ingredient foam at finasteride 0.1%, minoxidil 5%, and tretinoin 0.01% offers a more considered, personalised path than anything available off the shelf.
How does the Finasteride 0.1%, Minoxidil 5%, Tretinoin 0.01% topical hair loss foam work?
Pattern hair loss is driven by multiple overlapping processes. This formula targets three of them directly.
Finasteride: blocking the hormonal signal
In pattern hair loss, follicles gradually shrink under the influence of DHT. Finasteride blocks type 2 5-alpha reductase — reducing the conversion of testosterone into DHT at the follicle. At 0.1%, the concentration reflects a clinical judgment that this is the right mid-range strength for the individual. Think of finasteride as turning down the hormonal signal — reducing the DHT-driven pressure that causes follicles to miniaturise over time.
Minoxidil: stimulating the follicle
Minoxidil is a potassium channel opener and vasodilator. Applied topically, it improves blood flow to follicles, prolongs the growth phase of the hair cycle, and stimulates follicle cells to produce thicker, healthier hair. It works through an entirely different mechanism from finasteride — addressing the circulatory and follicle-stimulating side of the equation rather than the hormonal side. Think of minoxidil as waking up the follicles — improving the conditions at the scalp so that existing follicles can produce more and healthier hair.
Tretinoin: enhancing delivery and follicle health
Tretinoin at 0.01% works in a supporting role. It promotes cell turnover in the scalp, enhances the penetration of finasteride and minoxidil through the skin barrier, and supports the follicle environment. Think of tretinoin as preparing the ground — helping the other two active ingredients reach the follicles more effectively and supporting the scalp conditions that healthy hair growth depends on.
How do you use the Finasteride 0.1%, Minoxidil 5%, Tretinoin 0.01% topical hair loss foam?
This formulation is a topical foam and should only be used exactly as prescribed. The usual direction is:
Apply 1ml (2 sprays) at night to the scalp.
A dose you can control
Two sprays deliver a consistent, measured dose of all three active ingredients. You direct it precisely to the areas of thinning. No estimating. No dripping onto skin you did not intend to treat. No waiting for a liquid to absorb before you can move on with your evening. The foam sits where you put it, spreads with your fingertips, and dries quickly — making accurate, consistent application of the three-ingredient formula straightforward every night.
The right formula for you
Because this is a compounded medicine, the prescriber selects each ingredient and concentration based on your individual clinical profile and, where used, TrichoTest results. The 0.1% finasteride concentration reflects a clinical judgment that a mid-range anti-androgen approach is right for you. The minoxidil and tretinoin concentrations are the standard compounded strengths for this combination. The formula may expand or adjust over time as your treatment plan evolves.
Building a routine that works
Many people find it easiest to apply as part of their evening routine — after a shower, before bed. The foam dries quickly, sits lightly on the scalp, and does not transfer to the pillow. Applied consistently at the same time each night and washed off in the morning, treatment has the best possible conditions to work.
What to do if you miss a dose
Resume at the next usual time. Do not apply extra to make up for it. Consistent daily use over months matters far more than compensating for a missed night.
Finasteride 0.1%, Minoxidil 5%, Tretinoin 0.01% topical hair loss foam — Warnings and precautions
Who should not use this product
This product is not suitable for everyone. Extra care is needed if you are pregnant, trying to become pregnant, breastfeeding, have a scalp condition affecting absorption, or have a history of allergy to any ingredient in the formulation.
Finasteride warnings
Finasteride affects hormone pathways. Women who are pregnant or may become pregnant must not use this product — it can affect male foetal development. Men with a history of prostate cancer, BPH, or elevated PSA levels need careful assessment before starting. Finasteride lowers PSA levels, which may mask early prostate cancer. Baseline PSA screening may be required. Post-finasteride syndrome (PFS) — persistent sexual dysfunction, mood changes, or other symptoms after stopping — is a rare but recognised concern. The prescriber will discuss this risk during consultation.
Minoxidil warnings
Minoxidil is a vasodilator. Patients with a history of cardiovascular disease, low blood pressure, or cardiac conditions need careful assessment before starting. Systemic absorption is lower with topical use than oral minoxidil, but cardiovascular status will still be reviewed.
Tretinoin warnings
Tretinoin is a retinoid. Women who are pregnant or trying to become pregnant must not use this product — retinoids are associated with serious risks to foetal development. Scalp sensitivity, dryness, or peeling can occur, particularly in the early weeks of use. Avoid applying near the eyes or mucous membranes. Sun sensitivity may be increased — apply at night as directed and use appropriate sun protection during the day.
A note on concurrent treatments
If you are using other topical hair loss agents alongside this foam, disclose this during consultation. Concurrent use of multiple topical hair loss agents is not usually recommended without prescriber guidance.
Compounded does not mean casual
The foam format and three-ingredient formula do not reduce the need for proper prescribing review. The same thorough safety and suitability checks apply here as with any other prescription treatment. A full medical history — including cardiovascular status, prostate health, pregnancy status, previous medication reactions, and mood or sexual function concerns — will be reviewed during consultation.
Finasteride 0.1%, Minoxidil 5%, Tretinoin 0.01% topical hair loss foam — Side effects
Common side effects
Common side effects may include scalp irritation, dryness, redness, itching, flaking, or temporary shedding early in treatment. Tretinoin at 0.01% may cause some initial scalp dryness or sensitivity — this typically settles within the first few weeks. Early shedding is common when starting minoxidil — it occurs as follicles shift through the hair cycle and usually settles within a few months.
Finasteride-related effects
Finasteride at 0.1% topical strength may cause sexual dysfunction in some patients — including reduced libido, erectile dysfunction, or ejaculation disorders. These effects are uncommon with topical application but have been reported. Mood changes, depression, or anxiety have also been documented. Post-finasteride syndrome remains a recognised concern. The prescriber will discuss this during consultation. Report mood changes, persistent sexual dysfunction, or any other concerning symptoms promptly.
Minoxidil-related effects
Topical minoxidil may cause unwanted facial hair growth if the product spreads beyond the scalp. Apply only to the scalp and avoid contact with the face. The foam format helps with precise application and reduces the risk of product drifting to unintended areas. Systemic effects are uncommon with topical use but can include dizziness, palpitations, fluid retention, or low blood pressure.
When to seek advice
Seek advice if you develop chest pain, dizziness, palpitations, swelling, marked irritation, signs of allergy, severe mood changes, persistent sexual dysfunction, or unwanted hair growth in areas other than the scalp.
Finasteride 0.1%, Minoxidil 5%, Tretinoin 0.01% topical hair loss foam — Drug interactions
Why interactions matter with this formula
All three active ingredients carry interaction considerations. Thorough review before starting is essential.
Finasteride interactions
Finasteride is metabolised via the CYP3A4 pathway. Strong CYP3A4 inhibitors may increase finasteride levels; enzyme inducers may reduce them. Topical absorption is lower than oral finasteride, but relevant medicines will be reviewed during consultation.
Minoxidil interactions
Topical minoxidil may have an additive effect in patients taking antihypertensive medicines, potentially causing blood pressure to fall further. Patients taking medicines for cardiovascular conditions, blood pressure, or fluid balance should discuss this with the prescriber before starting.
Tretinoin interactions
Tretinoin may increase skin sensitivity and can interact with other topical products that cause dryness or irritation. Products containing salicylic acid, benzoyl peroxide, or strong exfoliants should not be used on the same area without prescriber guidance.
Other scalp products
Other scalp treatments, harsh exfoliants, or irritating cosmetic products may increase the risk of local reactions. Concurrent use of multiple topical hair loss agents is not usually recommended without prescriber guidance. All current products should be disclosed during consultation.
Hair loss treatment needs patience. Most people need several months of consistent use before visible improvement becomes apparent. Early shedding in the first few weeks is common with minoxidil and is not a sign that treatment is failing. The foam format makes consistent nightly application easier to maintain — and consistency is what treatment outcomes depend on.
Is this suitable for both men and women?
It may suit some adults, but the prescriber will assess this carefully. Women who are pregnant or trying to become pregnant must not use this product — it contains both finasteride and tretinoin, both of which are contraindicated in pregnancy. Suitability is always assessed individually.
Why does this formula contain three ingredients?
Pattern hair loss has multiple drivers. Finasteride addresses the hormonal pathway. Minoxidil addresses the circulatory and follicle-stimulating pathway. Tretinoin enhances absorption and follicle health. For patients whose TrichoTest results or clinical profile indicate that all three are needed, this combination in a foam format is the most clinically efficient and practically sustainable starting point.
Why is the finasteride concentration 0.1%?
0.1% is a mid-range compounded finasteride concentration. The prescriber selects it when clinical assessment — and where used, TrichoTest results — indicates a moderate anti-androgen requirement. It is not a default. It is the appropriate concentration for the individual being treated.
Why is this in foam format?
Foam does not drip or run. It dries faster than a liquid and is easier to apply precisely to areas of thinning. For people who have found liquid hair loss products messy or awkward to use consistently, foam can make a meaningful practical difference — and with a three-ingredient formula, consistent application every night matters more than ever.
How is finasteride different from dutasteride?
Both are 5-alpha reductase inhibitors that reduce DHT. Finasteride selectively blocks type 2 5-alpha reductase. Dutasteride blocks both type 1 and type 2. TrichoTest can help identify which is the more appropriate anti-androgen for the individual's genetic profile. The prescriber will discuss the most suitable option.
What does tretinoin do in this formula?
Tretinoin at 0.01% enhances the scalp's absorption of finasteride and minoxidil, promotes cell turnover, and supports the follicle environment. At this low concentration it complements the other active ingredients without causing the irritation associated with higher retinoid strengths.
What is compounding and why does it matter?
Compounding is the preparation of a medicine to order for an individual patient by a licensed pharmacy. This specific three-ingredient combination in a foam does not exist in any standard licensed product — compounding is what makes it possible.
Can the formula be adjusted later?
Yes. One of the advantages of compounded treatment is that the formula can evolve over time. If clinical assessment or TrichoTest results indicate that a different finasteride concentration, or additional ingredients, would be beneficial, the prescriber can adjust accordingly. Discuss this during your consultation or at review.
Can I use it if standard hair loss products irritate my scalp?
Possibly. The foam format avoids some of the dripping and residue issues that make liquids uncomfortable. If scalp sensitivity is a significant concern — particularly given the tretinoin component — the Trichosol version of this formula, which is alcohol free and propylene glycol free, may be a better option. Discuss this with the prescriber.
How can TrichoTest help with this treatment?
TrichoTest analyses 26 genetic markers across nine key pathways. It helps the prescriber identify whether finasteride is the most appropriate anti-androgen, whether 0.1% is the right concentration, whether minoxidil response is likely to be strong via the SULT1A1 pathway, and whether tretinoin adds meaningful benefit — all before treatment begins.
Does TrichoTest guarantee the right treatment?
No. It reduces guesswork and supports more informed prescribing, but it does not guarantee results. Genetic testing works best alongside clinical assessment and your personal treatment history.
Will I need a prescription?
Yes. This is a Prescription Only Medicine. A UK-qualified prescriber must review suitability before supply. The consultation can be completed online at courierpharmacy.co.uk.
Can I stop if I see improvement?
Do not stop or change treatment without advice. Hair loss often returns to its previous pattern if treatment stops, even when results have been encouraging.
What is the Gro hair loss range?
Gro is the compounded hair loss brand from Courier Pharmacy and Medical Mojo. It offers liquid, foam, and Trichosol formulations, all priced at £29.99 for up to three active ingredients — less than £1 per day.
How much does this cost?
£29.99 for a 30ml bottle, designed to last around one month. Less than £1 per day.
How long does a 30ml bottle last?
Around one month when applied as directed — two sprays to the scalp at night.
What is the difference between liquid, foam, and Trichosol?
Liquid is a traditional spray solution with alcohol and propylene glycol. Foam is lighter, faster-drying, and easier to apply without dripping. Trichosol is a propylene glycol free and alcohol free option for patients with sensitive or reactive scalps. All are available across the Gro range.
Is foam better than liquid for this formula?
It depends on your scalp and what you have found workable before. Many people find foam easier and more comfortable to use consistently — particularly with a three-ingredient formula that needs to be applied accurately every night. The prescriber can help you decide which format suits you best.
Can I use other hair loss products at the same time?
Concurrent use of multiple topical hair loss agents is not usually recommended without prescriber guidance. Disclose all current treatments during consultation.
I have a heart condition — can I use topical minoxidil?
Disclose any cardiovascular history during consultation. The prescriber will assess suitability carefully. Topical minoxidil carries lower systemic absorption than oral forms, but cardiovascular status is always reviewed before prescribing.
What if I have had problems with finasteride before?
Disclose this during consultation. Any previous adverse effects from finasteride — including post-finasteride syndrome — are essential information for the prescriber to assess your suitability safely.
Disclaimer
This article is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional before starting any new treatment.
Written by the Courier Pharmacy clinical content team and reviewed in line with UK pharmacy standards.
How this content was created
This content was created using UK clinical guidance, peer-reviewed evidence, and patient-focused healthcare writing principles. It supports safe understanding, not self-prescribing, and has been reviewed in line with pharmacy standards.
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Finasteride 0.1%, minoxidil 5%, tretinoin 0.01% topical hair loss foam
