woman putting serum in her curly hair
Moisturizing skin-care products commonly feature hyaluronic acid, which you may apply via a dropper.
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Hyaluronic acid is an all-star skin-care ingredient praised for its ability to lock moisture into skin and produce a dewy, healthy complexion. Previous research even suggests hyaluronic acid may, from the inside out, help correct premature skin aging that occurs from ultraviolet (UV) exposure.
Recently, some users on TikTok have begun gushing about hyaluronic acid for another reason: its purported ability to transform hair from dry and brittle to healthy and lustrous.
"Saw a TikTok that said hair oil doesn't moisturize your hair, only water can. So I tried Hyaluronic Acid!" wrote TikTok influencer Kaitlyn Boyer in an August 2021 video that has been viewed over 3.7 million times. Starting out with damaged-looking locks, she explains that she wet her hair and applied a hyaluronic acid product, The Ordinary's Hyaluronic Acid 2% + B5, nightly. After one night, her hair looks noticeably healthier, and after two nights, she notes a "major difference." At the two-week mark, she claims her hair to be "way more manageable,” revealing that even her hairstylist asked what products she had been using.
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