Ingredient pairing

Can you mix GHK-Cu and Mandelic Acid?

Use with careUse these with care.

GHK-CuMandelic Acid

Low-pH acids and pure vitamin C can destabilize copper peptides, so side by side they may simply do less.

Do this: Keep the copper peptides in a separate routine, morning or evening.

Routine: Best kept in separate routines, morning and evening.

GHK-CuSolid and proven
Efficacy7
Anti-aging7
Barrier4
Mandelic AcidSolid and proven
Efficacy8
Acne7
Brightening6

Skip if: very sensitive, compromised barrier

Ask your doctor in pregnancy

General guidance, not medical advice. When in doubt, introduce one product at a time.