I have been using retin a (tretinoin) micro 0.4% for 3 months. I have been pimple free but lately I am getting a few pimples. Should I switch to. 1% strength?

Yep! As long as you can tolerate the increased strength, go up! the Retin-A 0.4% for 3 months has done the job that it's going to do. If you want additional benefit, then it's time to make a change. Continue with the clinda and Renova (tretinoin) - only change one thing at a time so you know what's different. Also, don't forget about twice weekly microdermabrasion cleanser and daily moisturizer!

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