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Bettaieb A, Jiang JX, Sasaki Y, et al
Traditional Formulations of Copper Peptides Often Face These Challenges: Low Skin Penetration: The hydrophilic nature of copper peptide ghk-cu limits absorption across the skin barrier
M.ArsiK.et al
& Rothenberg, M
Hyperpigmentation (damage-based) This includes dark spots, acne marks, and uneven skin tone caused by inflammation, sun exposure, or injury
