Ingredient pairing

Can you mix Ammonium lactate and Retinyl Propionate?

Same answer whichever way you searched it: Retinyl Propionate and Ammonium lactate.

ClashThese clash.

Retinoids and exfoliants both speed up cell turnover, so together they tend to stack irritation and can wear down your barrier.

Do this: Use them on alternate nights rather than the same evening.

☀ Morning

Nothing here

☾ Evening

Ammonium lactateRetinyl Propionate

Use on alternate nights, not the same evening.

Ammonium lactateSolid and proven

Efficacy7

Hydration6

Anti-aging3

Skip if: very sensitive, compromised barrier

Ask your doctor in pregnancy

Retinyl PropionatePromising, not proven

Efficacy5

Anti-aging4

Brightening2

Skip if: pregnancy, breastfeeding

Not in pregnancy

Written by Maya Faour How we score →

Which one goes first?

Not on the same night

Use Ammonium lactate and Retinyl Propionate on alternate evenings rather than layering them together.

Ammonium lactate and Retinyl Propionate: Clash. These clash. Retinoids and exfoliants both speed up cell turnover, so together they tend to stack irritation and can wear down your barrier. Which goes first: Not on the same night. — The short version, if you want to keep it.

The short version, if you want to keep it.

How to introduce Ammonium lactate and Retinyl Propionate

Patch test each one first: a coin-sized amount on your inner forearm for two or three days, watching for redness or stinging.
Alternate nights: Ammonium lactate one evening, Retinyl Propionate the next, so your skin only handles one of them at a time.
Ease the exfoliating acid in slowly: start at two nights a week for the first fortnight, then build up only as your skin stays comfortable.
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.

Two strong actives at once is a lot to ask of your skin. Going slow is exactly what keeps this pairing working instead of backfiring.

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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More pairings with Retinyl Propionate

Ammonium lactate and Retinyl Propionate, answered

Can you mix Ammonium lactate and Retinyl Propionate?

These clash. Retinoids and exfoliants both speed up cell turnover, so together they tend to stack irritation and can wear down your barrier. Use them on alternate nights rather than the same evening.

Should you use Ammonium lactate and Retinyl Propionate in the morning or at night?

Keep them to the evening, but on alternate nights rather than together.

How should you introduce Ammonium lactate and Retinyl Propionate?

Patch test each one first: a coin-sized amount on your inner forearm for two or three days, watching for redness or stinging. Alternate nights: Ammonium lactate one evening, Retinyl Propionate the next, so your skin only handles one of them at a time. Ease the exfoliating acid in slowly: start at two nights a week for the first fortnight, then build up only as your skin stays comfortable. 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. Two strong actives at once is a lot to ask of your skin. Going slow is exactly what keeps this pairing working instead of backfiring.

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.