Copper Peptides (GHK-Cu)

What it does

A signal peptide (GHK-Cu) that supports firmness and skin conditioning. Peptides generally are gentle, irritation-free support players - copper peptides just have one quirk: chemistry.

How to use it

Keep them away from low-pH products. Near-neutral companions only in the same session - hydrators, niacinamide, ceramide moisturizers.

What not to mix it with

• vitamin C (pure, low-pH forms) - see Copper peptides + vitamin C
• AHAs - see Copper peptides + AHA
• BHAs - see Copper peptides + BHA

What it gets along with

Fine with hydrators, niacinamide and barrier moisturizers. Higher-pH vitamin C derivatives (SAP/MAP) are much more compatible than pure ascorbic acid.

Worth clearing with your doctor during pregnancy or nursing.