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Patients may experience skin rashes, itching, or swelling, particularly those with known allergies to plants in the Asteraceae family, such as ragweed or marigolds

GHK-Cu increases collagen and elastin formation in skin cells, which helps improve skin firmness and elasticity

Yan Wang, [email protected] These authors have contributed equally to this work and share first authorship Disclaimer All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers

Personalized oxidative stress assessment guides peptide selection