acne
"Its funny to read how many get "burned and dry/ flaky skin". 



The first thing my doctor told me was, EASE into it! use a VERY light layer and ONLY at night - not in the morning as well. A pea sized amount is enough. Put it on your finger and dot it around your face and then massage them out. He also told me that if it starts to burn/hurt, STOP using it for a few days.



You should NEVER EVER keep using it when your face is in pain, obviously. 



Plus you need a very good, heavy moisturiser. This stuff is made from peroxide and retinoid, so it will sting a little the first times you use it, but if you use common sense it will go away within weeks. I feel bad that people use it the wrong way and then blame the product. Works great for me"