acne
"After retin A seemingly stopped working, my doctor put me on differin. I had high hopes but it didn't work out. This gel didn't cause the dry irritation in my skin but instead caused my skin to become excessively oily which then cause blackheads to pop up all over my face, which I've never had a problem with them, except maybe a few on my nose and in the creases of my nose. I started getting blackheads on my forehead (and I'm not talking about them being barely noticeable, they were large and made noticeable bumps on my skin) on my chin, between my eyebrows - everywhere. I also started developing acne on my cheeks which I've never had before so I stopped taking the mediation after that completely."