neither format is intrinsically more effective
Should I use sunscreen while using Zeeglow soap
Lorenz, G., Lech, M
For GHK-Cu specifically: the dermapen is the better choice if you are treating anti-aging or scars at 0.5 mm and above
Ogunjimi, Carr, Lawson, Ferguson, and Brogden, in a 2020 study in Scientific Reports with 111 subjects, found that micropore lifetime was significantly longer in deeper skin tones, and that objectively measured skin color predicted closure time better than self-identified race
For example, basic fibroblast growth factor (bFGF) and epidermal growth factor (EGF) promote fibroblast activation, collagen synthesis, and vascularization [3], while antimicrobial peptides (AMPs) contribute to infection control and immune modulation at wound sites [21, 22]