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GHK-Cu promotes skin repair by stimulating collagen production and reducing inflammation
The dosage may vary by the type of L-carnitine supplement, however
(2005) in a randomized double-blind clinical study found that a 0.001% Pal-KTTKS formulation significantly reduced wrinkle depth and volume compared to vehicle control after 8 weeks of application
doi:10.1016/0735-1097(95)80010-e Ruggenenti P, Cattaneo D, Loriga G, et al
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