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      learn Melatonin

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

      learn Follistatin

      glycoprotein that inhibits TGF-β and promotes hair growth by antagonizing activin

      learn Hair Fibers

      cosmetic product that temporarily makes hair appear thicker

      learn Minoxidil

      An essential vasodilator with some anti-androgenic effects, has excellent safety record