Blood 100 , 12741286 (2002)
A: Injectable GHK-Cu typically provides higher bioavailability and deeper tissue penetration compared to topical applications, often resulting in more dramatic results for significant skin concerns or hair loss
Several technical reasons may explain our distinctive findings, including differences in the microbiome sampling site, the limited n per group, singly housing mice, or the use of highly similar lean, Western, and high-fat diets which systematically exchanged fat content with carbohydrate content
Additionally, because of its ability to regulate the hepatic sensitivity to GH, intra-portal insulin delivery has turned out to be an essential co-player for effective GH-induced hepatic IGF-I synthesis (1115) ( Figure 1A )
Thats the biggest complaint I hear. Glutathione topical sprays can have similar smells, he notes