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Skincare science: A beginner's guide to lactic acid for skin

By Fiona Embleton

Getty.

With its ability to work on wrinkles, dead skin cells and skin’s moisture levels, lactic acid is a great all-rounder for any skin type, but particularly acne-prone complexions

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If someone told you that slathering your skin in sour milk could wither away spots, buff away dead cells and improve the look of fine lines, you’d probably think it was some sort of bizarre TikTok hack. Yet, bathing in goat's milk was the secret to Cleopatra's legendary smooth skin as far back as Ancient Egyptian times. Fast forward to 2022 and, apart from giving dairy products their distinctly tart odour, what exactly is lactic acid's role in the beauty space?

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