Is Melatonin A Proper Retinol Alternative? An Editor Tests It Out

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You simply can’t discuss skin longevity without name dropping retinol. In fact, many derms consider it the No. 1 skin care ingredient (honorable mentions to vitamin C and SPF, of course). It promotes collagen production, enhances cell turnover, improves sun-damaged skin, treats acne—I could go on.

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