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I saw this product(link) for restoring color to gray hair and the news articles about it(link) that claim it stimulates melanin synthesis and hair pigmentation, But I am a bit skeptical about it so I searched about the active ingredient of this product palmitoyl tetrapeptide-20 and found that there was recent research about it for treating gray hair(link,another link) and most of the scientists behind this research are indeed from the company behind this product. So this is real? its actually restore hair color to gray hair?.

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    +1 for doing your homework and noticing that the only research available was authored by the company that makes the product. If you did a thorough search of the literature I'm not sure that anyone is going to have better information.
    – Carey Gregory
    Aug 19 '18 at 22:29

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