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RetinolandCopper peptides

Can you use retinol with copper peptides?

Myth: fine togetherLimited evidence

Yes, as far as current evidence shows. There's no published research showing that copper peptides and retinoids cancel each other out; the warning mostly comes from brand usage guides.

Why

The copper peptide conflicts with a chemical explanation involve pure vitamin C, which reacts with copper, and strong acids, which can break peptides down. Retinoids aren't in either group. Using the two together hasn't been studied directly, though, so the evidence either way is thin.

How to use them

You can use both in the same routine. If your skin is sensitive, apply copper peptides in the morning and your retinoid at night.

Sources

  1. 1Interview with Deciem (The Ordinary) Chief Scientific Officer and Dr Davin Lim · Lab Muffin Beauty Science (Michelle Wong, PhD), 2020
  2. 2GHK Peptide as a Natural Modulator of Multiple Cellular Pathways in Skin Regeneration · BioMed Research International, 2015

General cosmetic information, not medical advice. Written with AI assistance from the sources above; updated October 2026.