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Collagen supplements have surged in popularity, with brands now putting the word 'collagen' on moisturisers, creams, balms, lotions, shampoos and conditioners
Complex Stability Research GHK-Cu stability may be influenced by pH, light, oxygen, moisture, temperature, agitation, competing ligands, container material, oxidation, and repeated handling
When the research question specifically isolates these two mechanisms, adding GHK-Cu introduces confounding from its gene-expression and anti-inflammatory effects
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