Dermatologists love retinoids – they speed up cell turnover so skin looks brighter and smoother, and improve the appearance of wrinkles. Retinoids can cause irritation, so if you’ve never used them be

Confused about retinoids? They are a family of ingredients derived from vitamin A. Retinoic acid, the most potent, prescription-only form, is at the top of the family tree, with ingredients like retin

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