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Archives of Dermatological Research 301(4):301-306. [doi.org]
The treatment comparison reveals GHK-Cu discontinuation profile proving more favorable than retinoids (less dependency, no rebound, better benefit retention) while similar to vitamin C and niacinamide (gradual decline, moderate long-term retention, low dependency)
Collagen IV production sees a dramatic 25.4-fold increase when GHK-Cu is combined with hyaluronic acid
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