Ingredient pairing

Can you mix Ammonium lactate and GHK-Cu?

Same answer whichever way you searched it: GHK-Cu and Ammonium lactate.

Use with careUse these with care.

Ammonium lactate GHK-Cu

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.

Ammonium lactateSolid and proven

Efficacy7

Hydration6

Anti-aging3

Skip if: very sensitive, compromised barrier

Ask your doctor in pregnancy

GHK-CuSolid and proven

Efficacy7

Anti-aging7

Barrier4

Written by Maya Faour How we score →

Which one goes first?

Best kept apart

Rather than layering them, keep Ammonium lactate and GHK-Cu in separate routines or on separate days.

Ammonium lactate and GHK-Cu: Use with care. Use these with care. Low-pH acids and pure vitamin C can destabilize copper peptides, so side by side they may simply do less. Which goes first: Best kept apart. — The short version, if you want to keep it.

The short version, if you want to keep it.

How to introduce Ammonium lactate and GHK-Cu

Patch test each one first: a coin-sized amount on your inner forearm for two or three days, watching for redness or stinging.
Keep them on separate days rather than together, so they are not both working on your skin at once.
Start the exfoliating acid at once or twice a week and increase gradually, giving your skin time to settle between steps.
If skin turns tight, flaky, red or starts to sting, drop back a step and let your barrier recover for a few days before pushing on again.

There is room for both here, as long as you build up gently and let your skin set the pace.

For your skin type Sensitive skin should ease in gently: Ammonium lactate can be mildly irritating on its own, and more so alongside another active. On the upside, Ammonium lactate leans hydrating or soothing, which helps buffer the rest.

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Also worth checking

More pairings with Ammonium lactate

More pairings with GHK-Cu

Ammonium lactate and GHK-Cu, answered

Can you mix Ammonium lactate and GHK-Cu?

Use these with care. Low-pH acids and pure vitamin C can destabilize copper peptides, so side by side they may simply do less. Keep the copper peptides in a separate routine, morning or evening.

Should you use Ammonium lactate and GHK-Cu in the morning or at night?

Keep them in separate routines or on separate days rather than at the same time.

How should you introduce Ammonium lactate and GHK-Cu?

Patch test each one first: a coin-sized amount on your inner forearm for two or three days, watching for redness or stinging. Keep them on separate days rather than together, so they are not both working on your skin at once. Start the exfoliating acid at once or twice a week and increase gradually, giving your skin time to settle between steps. If skin turns tight, flaky, red or starts to sting, drop back a step and let your barrier recover for a few days before pushing on again. There is room for both here, as long as you build up gently and let your skin set the pace.

What else should you not mix with Ammonium lactate?

Ammonium lactate is best kept apart from Retinol, Retinal, Hydroxypinacolone Retinoate, Retinyl Palmitate. Introduce any new active one at a time.

Sources

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General guidance, not medical advice. When in doubt, introduce one product at a time, andhere is when to see a dermatologist instead.