They provide exogenous ketones, which mimic the ketones your body naturally produces
First, there is no human clinical trial of AHK-Cu by any route injectable or topical and the entire peer-reviewed evidence specific to this peptide is a single 2007 study that was ex vivo (isolated human hair follicles) and in vitro (cultured dermal-papilla cells) [1]
For safer glow, keep your routine simple, use the cream as directed, moisturize well, and protect your skin from the sun every morning.
Furthermore, the serum BHB level may vary depending on the time of day as BHB tends to be lower in the morning
RxPepsDirect (rxpepsdirect.com) provides telehealth prescriptions for seven topical formulations: a 1 percent GHK-Cu hair restoration solution, three GHK-Cu face creams, two GHK-Cu serums, and a methylene blue anti-aging cream