Can you use niacinamide with retinol?

The direct answer: one small test, and it came up empty

The only head-to-head irritation test we found is a 2024 patch study of 18 Chinese adults aged 23 to 40. Participants were patch-tested with retinol and three possible calming agents in a randomized, double-blind, vehicle-controlled design.

Two of the three helped. A 2% phytosteryl/octyldodecyl lauroyl glutamate blend and a 5% physiologic lipid mixture of ceramide three and cholesterol both reduced retinol-induced redness and inflammation compared with vehicle. The 3% niacinamide did not offer relief from retinol-induced discomfort.

That result comes with caveats. The sample was small, the study was industry-affiliated, and only one niacinamide concentration was tested, so a negative result may reflect dose, vehicle or sample size rather than a final verdict.

Why people pair them anyway

The logic is adherence. Retinoid side effects like dryness and stinging are a common reason people quit, and a review of cosmeceuticals in acne argues that niacinamide combined with retinoids may help people stick with treatment. The same review describes a 5% niacinamide cream that reduced dryness and irritation during oral isotretinoin treatment.

What the bigger niacinamide studies actually tested

Most of the positive data uses retinyl propionate, a retinol ester, or hexylresorcinol, not plain retinol. Retinyl propionate is related to retinol but is a different molecule, so these results don't transfer directly.

• A 2024 triple-active study of niacinamide, 4-hexylresorcinol and retinyl propionate improved the look of photoaging about as well as prescription tretinoin, with the authors calling it a well-tolerated alternative. The abstract gives no sample size or effect sizes, so we can't quote numbers yet.
• An 8-week split-face serum trial01479-8/pdf) found significant improvement in clinical grading from baseline after a chemical peel. The retrieved text does not give the sample size, grading scale or effect sizes.
• A 12-week JAAD study31885-1/abstract) in Chinese volunteers found 4-hexylresorcinol plus niacinamide beat niacinamide alone on several aging and pigmentation measures. Retinol was not part of the combination.
• A cell-based preprint reported that adding 10 mM niacinamide raised retinoid-responsive signal by 56% at 0.5 μM and 95% at 2 μM retinyl propionate. These are in-vitro results, not clinical outcomes.

How we'd approach it if you're trying it

Our read: niacinamide may be a reasonable companion for a retinoid routine, but the case rests on inference, not on a trial of retinol. If your skin stings, the evidence doesn't favor niacinamide as the fix, so lower your retinol frequency or strength first and talk to a dermatologist.

For a sense of how a controlled irritation test is run, a 2025 patch study used a 0.1% retinol serum as its irritant in 21 subjects and screened 15 soothing treatments. It's useful context for dosing, but we did not find its niacinamide result.

For background on the ingredient itself, see our niacinamide guide.