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Anthony Youn, MD@doctoryounTikTok

How many of these do you remember? If at least 3, then it’s time to start using Retinol! …more

original sound — @doctoryoun

what it claims

If you are a millennial (in your 30s or 40s), it is time to incorporate retinol into your skincare routine to prevent and diminish the signs of aging.

holds up

The advice to use retinol starting in one's 30s is scientifically well-supported. This active ingredient is one of the best-documented in modern cosmetics.

noli's read

The advice to use retinol starting in one's 30s is scientifically well-supported. This active ingredient is one of the best-documented in modern cosmetics. For example, a randomized controlled trial (RCT) published by Kong et al. (2015) in the Journal of Cosmetic Dermatology proved that topical retinol significantly improves the appearance of fine lines and stimulates collagen synthesis. Furthermore, an in-depth review of the research published in Clinical Interventions in Aging (Mukherjee et al., 2006) confirms its overall efficacy in preserving youthful skin. Starting at this age is sensible, as this is when cell turnover naturally begins to slow down. The only nuance concerns the claim that it is 'suitable for all skin types': as retinol can be irritating initially, those with sensitive skin should adopt it very gradually.

the sources

No named source held this one up — that absence is part of the verdict.

Claimed by Anthony Youn, MD. Noli grades the claim, never the person.

Decoded by Noli · July 14, 2026 · the original post

Anthony Youn, MD in the Register77 claims graded · solidity 86/100See their record →

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