i have only used duac for two days,the first morning lots of redness and told to use only were needed,the next morning bright red like severe sunburn and ichy and sore,and the next morning (did not use anymore) puffed up like a balloon around my eyes,look like black eyes,my face is numb,stiff,itchy,red,sore and very swollen and my skin is rough and dry,and i wont be using it again.I was told is was ok for mild acne but was not prepared for this,I would not recomend unless severe and would test on a tiny area first.