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Similar to niacinamide, the color contribution is minimal on its own

Studies show that GHK-Cu can support hair and scalp health in ways that are relevant to hair growth and thickness: Stimulates follicle cells: Laboratory research has shown that copper peptide complexes can stimulate human hair follicles to grow longer and support the proliferation of dermal papilla cells, which are key regulators of hair follicle activity

This makes it much more suitable than sterile water, which is free from living organisms but does not contain any preservatives like 0.9 percent benzyl alcohol that can limit microbial growth in the long run

Recently, theyve gained attention for their potential skin-brightening effects