compound that activates Wnt/β-catenin to promote hair regrowth and create new hair follicles  
        nucleoside used for hair regrowth stimulant properties  
        an anticonvulsant repurposed for hair loss via histone inhibition  
        chemical that might completely regrow follicles from hair transplant extractions  
        a copper peptide showing promise in both regrowth and reversing gray hair