MINOXIDIL MELATONIN GHK CU TRETINOIN CAFFEINE SCALP FOAM Beauty Refined GHK Cu for hair loss. Does it actually work? Let the science answer. Hair loss happens when follicles miniaturize, inflammation attacks them, blood supply weakens, and stem cells go dormant. GHK Cu addresses several GHK CU, PTD DBM, Zinc Thymulin for Healthier Hair 18 month progress; Topical Minoxidil twice a day and topical AHK CU twice a day : r tressless