Clascoterone is a topical anti-androgen developed to treat androgenetic alopecia. Applied as a solution to the scalp, it blocks the binding of DHT to follicular receptors, without impacting overall hormonal balance.


Developed by Cosmo Pharmaceuticals (Switzerland), the molecule is currently undergoing regulatory review (FDA/EMA approval expected 2027-2028). Phase III clinical trials have shown an improvement in hair count of up to 539% compared to placebo. Clascoterone is not yet available in Swiss pharmacies.

Your expectations

Do you suffer from androgenetic alopecia and want a topical treatment, without oral intake, without affecting your hormonal balance? Have you stopped taking finasteride due to side effects?


The Croix d'Or Hair Clinic in Geneva provides information on clascoterone and guides you towards the solution best suited to your current situation.


Get your diagnosis online or contact us directly.

Introduction: What is clascoterone?

Clascoterone is a topical androgen receptor antagonist. For baldness, it is marketed under the brand name Breezula, in a 5% solution. It has been FDA-approved since 2020 under the name Winlevi (1%) for hormonal acne: its systemic safety profile is therefore well-documented.


In androgenetic alopecia, DHT binds to receptors in hair follicles and triggers their progressive miniaturization. Clascoterone blocks this binding directly at the follicle level, without reducing circulating DHT. The product acts where it is applied, with virtually no systemic absorption.


Are you interested in discussing your treatment options? Schedule an appointment with one of our specialist physicians: only a personalized examination can determine the best strategy for your situation. Treatment and follow-up are always tailored to your individual needs.

clascoterone_breezula_traitement_capillaire_contre_la_calvitie

Clinical Results

The pivotal SCALP-1 and SCALP-2 studies, conducted on 1,465 patients, evaluated clascoterone 5% solution against placebo for 6 months. In SCALP-1, the improvement in hair count in the target area reached up to +539% compared to placebo; in SCALP-2, this improvement was +168%.


No systemic hormonal impact was detected in either study. These figures are from randomized controlled trials and do not constitute a guarantee of individual results.

Clascoterone, finasteride, minoxidil: what are the differences?

Clascoterone (Breezula) Finasteride Minoxidil
Mechanism Blocks DHT receptors in the follicle Inhibits DHT production Vasodilator, stimulates regrowth
Way Topical (scalp) Oral / Topical Topical / oral
Systemic effect Almost nothing Yes (reduction of circulating DHT) Low (topical route)
Reported sexual side effects Not detected in studies Rare but documented (<1%) No
Status in Switzerland AMM expected 2027-2028 Available Available


Note: The combination of clascoterone and minoxidil may potentiate the effects of both treatments. Data on this combination are currently being evaluated.

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For whom is clascoterone treatment indicated?

Clascoterone is indicated for patients with early to moderate androgenetic alopecia (Hamilton-Norwood I to IV), and in particular:


  • People who have stopped taking finasteride due to side effects or who refuse the oral route
  • Patients seeking targeted topical treatment without hormonal impact
  • Patients before or after a FUE hair transplant , to protect the native, non-transplanted hairs


In women, DHT also plays a role in androgenetic alopecia. Data specific to the female population are currently being evaluated.

Availability and status in Switzerland

Clascoterone for baldness is not yet available in pharmacies or by prescription in Switzerland. Marketing authorization applications will be submitted to the FDA and EMA after the current 12-month safety observation period. Swissmedic generally follows the EMA's recommendations for new molecules; approval in Switzerland is expected within the same timeframe, 2027-2028.


The Croix d'Or Hair Clinic does not yet offer this treatment, but will assist you with information and preparation for your treatment.

side effects and contraindications

The effects reported in the studies are local and benign:


  • erythema (inflammatory skin condition) & mild scalp irritation,
  • transient dryness or peeling at the application site.


No sexual or hormonal side effects have been detected. Definitive contraindications will be specified at the time of marketing authorization. For women of childbearing age, caution is still advised pending complete regulatory data.

Frequently asked questions about clascoterone

Is clascoterone available in pharmacies in Switzerland?
No, not yet. Clascoterone for baldness is currently undergoing regulatory review by the FDA and the EMA. Its availability in Switzerland is estimated between 2027 and 2028.
Does clascoterone cause sexual side effects?
No. Its topical mechanism, with virtually no systemic absorption, fundamentally distinguishes it from finasteride. No sexual or hormonal effects were detected in phase III clinical trials.
Can clascoterone be combined with a hair transplant?
Yes, it's actually the most consistent approach as a hair stabilization agent for balding areas. FUE transplantation permanently restores hairless areas. Clascoterone helps stabilize native, non-transplanted hairs and slow the progression of baldness in the untreated areas.
When will clascoterone be available in Europe?
The application for marketing authorization is planned for 2026, following the safety observation period. European market launch is estimated between late 2027 and early 2028.​
Is clascoterone effective in women?
Phase III studies primarily involve men. Data specific to women are pending. A medical consultation remains essential before considering any treatment for women.
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