Forum participants discussed the efficacy of topical GHK-Cu for hair regrowth, raising concerns about molecular size and absorption. The debate centered on whether foam or serum delivery systems are more effective for penetrating the scalp.
Forum participants discussed the efficacy of topical GHK-Cu for hair regrowth, raising concerns about molecular size and absorption. The debate centered on whether foam or serum delivery systems are more effective for penetrating the scalp.