Ingredient pairing
Can you mix Citric Acid and Lactic acid?
Use with careUse these with care.
Two exfoliants at once is usually one too many, and a common cause of irritation.
Do this: Pick one, and alternate days if you want to use both.
☀ Morning
Nothing here☾ Evening
Citric AcidLactic acidUse on alternate nights, not the same evening.
Skip if: very sensitive, compromised barrier
Ask your doctor in pregnancySkip if: very sensitive, compromised barrier
Ask your doctor in pregnancyWhich one goes first?
Not on the same night
Use Citric Acid and Lactic acid on alternate evenings rather than layering them together.
How to introduce Citric Acid and Lactic acid
- 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: Citric Acid one evening, Lactic acid the next, so your skin only handles one of them at a time.
- 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: Citric Acid and Lactic acid can be mildly irritating on their own, and more so alongside another active. On the upside, Lactic acid leans hydrating or soothing, which helps buffer the rest.
Also worth checking
More pairings with Citric Acid
More pairings with Lactic acid
Citric Acid and Lactic acid, answered
Can you mix Citric Acid and Lactic acid?
Use these with care. Two exfoliants at once is usually one too many, and a common cause of irritation. Pick one, and alternate days if you want to use both.
Should you use Citric Acid and Lactic acid in the morning or at night?
Keep them to the evening, but on alternate nights rather than together.
How should you introduce Citric Acid and Lactic acid?
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: Citric Acid one evening, Lactic acid the next, so your skin only handles one of them at a time. 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 Citric Acid?
Citric Acid 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.