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DEEP HYDRATION WITHOUT GREASE: This lightweight, youth-enhancing copper peptides serum for face sinks in fast to lock in moisture

To view a copy of this licence, visit About this article Cite this article Bourgeois, B., Spreitzer, E., Platero-Rochart, D

The study showing copper peptides increased collagen in 70% of users versus 40% for retinoic acid suggests copper peptides may actually be more effective for collagen building specifically, though retinoids offer additional benefits (texture improvement, dark spot reduction) that copper peptides don't provide as strongly