Can you use Copper peptides (GHK-Cu) with AHAs (glycolic / lactic acid)?
Separate — AM / PMEvidence · Commonly advised
Low-pH exfoliating acids are commonly kept apart from copper peptides, since the acidic environment is thought to disturb the copper complex. Use the acid on its own evening and the peptide another time.
Commonly advised: Frequently recommended by formulators; direct evidence can be limited.
In practice: use one in the morning and the other in the evening.
Copper peptides (GHK-Cu)
INCI · Copper Tripeptide-1
A copper-bound tripeptide used in serums for the look of firmness and a more even tone.
Read the reference →AHAs (glycolic / lactic acid)
INCI · Glycolic Acid
An alpha-hydroxy acid that exfoliates for a smoother-looking surface; usually evening.
All pairings →Cosmetic layering guidance for the look and feel of your routine — not medical advice. Patch-test new combinations.