After the "peeling" process, and the dead skin was gone, my face was pink, as my doctor described it would be. Two days later, the treated area turned dark brown. I phoned the physician, who prescribed hydroquinine with Retin A, which I have been using 3 times a day. I have been using the prescription for 8 weeks, with no change/lightening of the skin. Doctor told me not to be alarmed!