Totally safe to use longterm, through your 40's, 50's ,60's, 70's and even 80's !. Often takes upto 4-6 months, if using Retin-A nightly, for facial changes as you mention to become apparent . Keep up the good work.
Answered 9/3/2021
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A doctor has provided 1 answer
8 doctors weighed in across 4 answers
8 doctors weighed in across 4 answers
A doctor has provided 1 answer
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