the gold standard retinoid in dermatology that's also helpful for hair regrowth alongside Minoxidil  
        an anticonvulsant repurposed for hair loss via histone inhibition  
        precursor of vitamin B5 with hair stimulating effects  
        compound that activates Wnt/β-catenin to promote hair regrowth and create new hair follicles  
        An essential vasodilator with some anti-androgenic effects, has excellent safety record