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It upregulates growth factors including VEGF and EGF
The effects should also be kept in proportion
A moisturizer can be applied before or after to buffer ('sandwich' method)
established that facial cream containing GHK-Cu increased collagen in photoaged skin of 20 female volunteers, performing better than vitamin C and retinoic acid
GHK-Cu upregulates antioxidant defenses such as superoxide dismutase (SOD1) and catalase , helping melanocytes survive and continue producing pigment
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