Look for 99% HPLC purity standards, full LC-MS identity confirmation, transparent certificate-of-analysis documentation, clear RUO labeling, and responsive technical support
Melanie Avalon: So when the vitamin C combines or affects the oxidized glutathione, what happens to the vitamin C
Unlike many antioxidants that work alone, glutathione actively helps regenerate other antioxidants like Vitamin C and Vitamin E after they are used, making them effective again
The "right" dose sits in a narrow window that depends on: Delivery method - injectable GHK-Cu vs topical GHK-Cu vs oral/sublingual GHK-Cu Goal - skin rejuvenation , hair and scalp support, wound healing , general anti-ageing Individual factors - age , skin type , baseline GHK levels , other peptides being stacked Natural plasma GHK falls from roughly 200 ng/ml at age 20 to around 80 ng/ml by age 60