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Efficacy and safety of a novel topical formulation containing copper tripeptide-1 (GHK-Cu) for facial photoaging: A randomized, double-blind, placebo-controlled study

make it much more difficult to clear acne prone skin

By blocking NF-B, it reduces the production of pro-inflammatory cytokines (IL-1, TNF-, IL-6) and inflammatory mediators (PGE2, NO) in keratinocytes and dermal cells

Move to daily application in week three only if your skin tolerates the previous frequency well

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