Flavonoids with Two Hydroxyl Groups in the B-Ring Promote Pigmented Hair Regeneration

    August 2019 in “ Biological & Pharmaceutical Bulletin ”
    Nobuyuki Taguchi, Minoru Yuriguchi, Takuya Ando, Ryosuke Kitai, Hitomi Aoki, Takahiro Kunisada
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    TLDR Certain flavonoids help grow back colored hair after skin injury.
    The study from 2019 found that flavonoids with two hydroxyl groups in the B-ring, specifically sterubin, luteolin, and hydroxygenkwanin, effectively promoted the regeneration of black pigmented hair in mice after skin wounding. Flavonoids with only one OH group in the B-ring were not effective. The study suggests that the chemical structure of flavonoids is crucial for their ability to induce pigmented hair regeneration following skin injury. The experiments included a control group of 44 mice and treatment groups with 17 to 21 mice each.
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