Niacinamide + retinol
What the source says
WebMD says retinol and niacinamide can be used together, and that niacinamide may help with the dryness and irritation retinol can cause. Evidence is mixed: a 2024 patch-test study found 3% niacinamide did not reduce retinol-induced irritation (Fang et al., J Cosmet Dermatol), so do not count on it to prevent irritation. We have not tested this pair ourselves, and a consumer health article is not a trial of your products.
Where it can still go wrong
Retinol alone can cause redness, dryness and peeling, and a niacinamide product does not remove that risk. Strength, formula and how often you use it change how your skin responds. If it stings or peels, cut back and let skin settle.
A cautious way to start
Start retinol a few nights a week, add sunscreen by day, and patch-test new products. Skip retinol and ask a clinician first if you are pregnant or nursing, or use prescription treatments. Cosmetic guidance, not medical advice.
Check whether these products fit together See whether products on your shelf may clash and where they fit in an AM/PM routine. Cosmetic guidance, not a diagnosis. Sign up with Google to use the checker and get Pro free. No card or time limit. Sign up free and check my productsSources and limits
WebMD: retinol and niacinamide
WebMD supports the "can be used together" point. The AAD page covers who retinol may not suit. Neither tests this specific pair in your products.