• How Long Should You Let Retinol Soak In Before Applying Moisturizer?

    14 days ago - By Renee Rouleau

    I've been a believer in the benefits of retinol ever since I met Dr. Fitzpatrick over 30 years ago. At the time, he was the Chief of Dermatology at Mass General Hospital in Boston. Dr. Fitzpatrick was instrumental in getting tretinoin FDA-approved for the treatment of wrinkles (prior to that, it was only being used to treat acne). I vividly remember seeing how one of his hands-the hand he applied tretinoin to during demonstrations to his acne patients-was significantly smoother and brighter than the other. Eventually, I used what I had learned about retinoids from Dr. Fitzpatrick to...
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