How long does it take for retin a to work on acne scars Home › Forums › Cars › How long does it take for retin a to work on acne scars This topic has 0 replies, 1 voice, and was last updated 7 years, 3 months ago by spervaclase1987. You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In
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