"used duac years ago when i was a teenager with severe acne and now with mild acne as a 26 year old. worked brilliantly both times. skin started breaking out after my contraceptive implant was installed. duac 5% was not available but 3% worked fine. i used along with bio oil and tea tree face wash. did not experience any drying or flaking. very pleased, i think it also levelled out my complexion by lightening the dark scars but that may be the bio-oil"