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Clascoterone

Clascoterone is used to treat acne by blocking the effect of androgens in your skin, which causes sebum (oils that maintain your skin moist) production to reduce. Learn how to use the medication, its common side effects, special precautions to watch out for, and more.
  • Article last reviewed 06 January 2026
  • 6 mins read

What is this medication for?

Clascoterone is used to treat acne by blocking the effect of androgens in your skin, reducing sebum (oils that maintain your skin moist) production. 

How should I take or use this medication?

  • Wash the skin with cleanser, then rinse and pat dry.
  • Wash your hands before and after applying the medication.
  • Apply a thin uniform layer of medication to the acne-prone areas twice daily, or as instructed by your doctor.  
  • Avoid applying the medication on sunburnt or broken skin or too near to your eyes, mouth and nose as it may cause irritation.
  • Flush the area thoroughly with water if the medication accidentally gets into your eyes, mouth, or nose.
  • It may take 8-12 weeks of regular use to see significant improvements.

What should I do if I forget to take or use this medication?

If you forgot to apply a dose of this medication, apply it as soon as you remember. Skip the dose if it is almost time for the next dose. Apply your next dose at the usual time. Do not apply two doses at the same time to make up for the missed dose. 

What precautions should I take when taking or using this medication?

  • Inform your healthcare professional if:
    • You are allergic to this medication or any of the other ingredients of this medication.
    • You are pregnant, planning to become pregnant, or breastfeeding.
  • Avoid applying the medication over large areas of skin or using it for prolonged periods without medical supervision as it may increase the risk of a weak adrenal gland.
  • Use with caution in children as the risk of some side effects may be higher.
  • Avoid applying heavy make-up and using oily cosmetics. It is recommended to use make-up products with non-oily formulas.

What are some common side effects of this medication? ​

• Skin redness, itch, peeling, dryness

  • Avoid washing your face too often as this may increase the drying-out effect of your medication. Wash your face two to three times a day only.
  • Unless otherwise directed by your doctor, avoid using other “drying” preparations on the same treated areas to prevent severe irritations. These include harsh soaps and cleansers, alcoholic preparations, and medicated cosmetics or soaps. 

What are some rare but serious side-effects that I need to seek medical advice immediately? 

If you experience any of these symptoms, you should stop your medication and see your healthcare professional immediately.

  • Symptoms of weak adrenal gland include one or more of the following:
    • Severe stomach upset or vomiting
    • Severe dizziness or passing out
    • Muscle weakness
    • Feeling very tired
    • Mood changes
    • Reduced appetite
    • Loss of weight
  • Symptoms of a drug allergy, which may include one or more of the following:
    • Swollen face/eyes/lips/tongue
    • Difficulty in breathing
    • Itchy skin rashes over your whole body

How should I store this medication?

  • Store unopened containers in the refrigerator between 2-8⁰C. Do not freeze.
  • After opening, store at room temperature (at or below 30⁰C), away from direct sunlight and heat.
  • Discard this medication 1 month after first opening.
  • Keep this medication away from children

How do I throw away this medication safely? ​

Pack this medication into a black trash bag and seal it tightly before throwing into the rubbish chute or bin.

Disclaimer

Please take note that the above is not a complete list of all possible side-effects. If you have any concerns about your medication or if you have other side-effects that you think are caused by this medication, please consult your doctor or pharmacist. If you take more than the recommended dose, please seek medical advice immediately. The information provided on this page does not replace information from your healthcare professional. Please consult your healthcare professional for more information.

This article is jointly developed by members of the National Medication Information workgroup. The workgroup consists of cluster partners (NHG Health, National University Health System and SingHealth), community pharmacies (Guardian, Unity and Watsons) and Pharmaceutical Society of Singapore. The content does not reflect drug availability and supply information in pharmacies and healthcare institutions. You are advised to check with the respective institutions for such information.