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This is also why GHK-Cu appears frequently in longevity-adjacent research alongside other compounds studied for age-related cellular changes, since a quantifiable, age-correlated decline gives researchers a concrete variable to test against rather than a purely theoretical one

controls Rabbit wounds: GHK alone or combined with helium-neon laser improved wound contraction, boosted granulation tissue, increased antioxidant enzyme activity, and stimulated new blood vessel growth Diabetic rat models: PIC dressings with GHK showed higher glutathione and ascorbic acid levels, better epithelialization, and stronger fibroblast activation New Blood Vessel Formation Wounds cant heal without blood supply

Third-party HPLC verified, 99%+ purity

For SQ injections, it also depends on where your body tends to carry more fat

Biotechnol Lett

Clinical data support administration on the same day or in the same injection (if mixed), no proven pharmacokinetic interactions