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      learn Melatonin

      hormone commonly taken for sleep aid has some topical benefits for hair

      learn GHK-Cu

      a copper peptide showing promise in both regrowth and reversing gray hair

      learn Hydrocortisone

      a synthetic cortisol used for anti-inflammatory effects

      learn Azelaic Acid

      acid used for antimicrobial, anti-inflammatory and anti-androgenic properties