Ingredient pairing

Can you mix Glycolic acid and Tretinoin?

Q: Can you mix Glycolic acid and Tretinoin?

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.

ClashThese clash.

Glycolic acid Tretinoin

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

Glycolic acidTretinoin

Use on alternate nights, not the same evening.

Glycolic acidWorth paying for

Efficacy9

Anti-aging7

Brightening4

Skip if: sensitive, compromised barrier, rosacea

Ask your doctor in pregnancy

TretinoinWorth paying for

Efficacy10

Acne10

Anti-aging10

Skip if: pregnancy, breastfeeding, very sensitive

Not in pregnancy

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