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Topical product absorption times?

Hi There, I am wondering how long does it for products to fully absorb such as Vitamin C serum and Tretinoin? I have heard anywhere from 30 minutes to 1 hour but not sure which one is correct?

Answers (1)

From board-certified doctors and trusted medical professionals
Dr. Fereydoon S. Mahjouri, MD
Dr. Fereydoon S. Mahjouri, MD
Board Certified Plastic Surgeon
Answered on Aug 6, 2018
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