"my acne became worst within the first 2 weeks of using differin, then all of a sudden it began to get better.  the improvements must have happened at night because i would get excited in the mornings when i washed my face.  i have to strongly agree with the person who posted before me.  do not get your eyebrows waxed while using this product. my skin was ripped off and immediately turned red. a day or so later it left this large ugly scar under my eyebrows. about a week later it peeled and was fine, but who wants to go through that."