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GHK Peptide as a Natural Modulator of Multiple Cellular Functions (Pickart et al., 2015) This paper reviews clinical research showing that topical GHK-Cu can tighten skin, improve elasticity, reduce fine lines and wrinkles, and enhance skin clarity and density

At age 20, plasma GHK concentrations are typically around 200 ng/mL

Its usually sold online through research peptide suppliers labeled not for human use. This means quality and purity can vary dramatically

Shipping & Duties : Factor in logistics costs and import regulations for your target market

If you want a higher concentration for scalp-focused cosmetic use, see our GHK-Cu Hair Serum at 10%