-- Posted by Anonymous at 6:06 pm on Oct. 6, 2008 my dermatologist put me on retin- A for the night then in the morining, clindamyin Phosphate and i was wondering if wearing cover up effect it to not work as well? should i not use cover up? -- Posted by Radioactivv at 6:08 pm on Oct. 6, 2008 It won't effect it. I use that stuff too. -- Posted by major at 6:09 pm on Oct. 6, 2008 your skin is going to sting a lot, i was on that same treatment when I was like 14. You can wear foundation, but the clindamyacin makes your face like weirdly sticky. It also bleaches the shit out of everything. If you wear coverup, don't wear any with "acne medication" in it, because your skin will be dry as it is. I'd suggest starting a tinted moisterizer. -- Posted by drifting at 6:12 pm on Oct. 6, 2008 Note, its going to be three or four weeks before you start to see a difference with the Retin-A. It did wonders with my skin, but it was a while before I saw a difference. That reminds me that I need to buy some more to