Tretinoin
Also sold as: Retino-A, Retin-A
Prescription neededSkin medicines
Comes as:CreamGel
Also sold as: Retino-A, Retin-A
Acne: apply a pea-sized amount thinly over the whole affected area once a day at night, on dry skin. Use sunscreen during the day. Results take 6 to 12 weeks.
Your doctor may give you a different dose. Children's doses depend on weight.
Stop taking it and see a doctor straight away if you notice:
Medicines that can react with this one.
Using both increases skin irritation; apply them at different times of day.