Kiehl's
Ultra Pure High-Potency 5.0% Niacinamide Serum
Kiehl's Ultra Pure High-Potency 5.0% Niacinamide Serum — Lower-strength but pharmaceutically pure niacinamide with the same skin-refining aim
Best For
✓ A similar alternative to Paula's Choice 10% Niacinamide Booster
Where to Buy
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Frequently asked questions
What is a good dupe for Kiehl's Ultra Pure High-Potency 5.0% Niacinamide Serum?
Paula's Choice 10% Niacinamide Booster is our top-ranked alternative (70% match) — The dermatologist-loved concentrate — Paula's Choice's research-backed 10% niacinamide in an elegant, layerable booster.
Is there a cheaper alternative to Kiehl's Ultra Pure High-Potency 5.0% Niacinamide Serum?
Yes — Good Molecules Niacinamide Serum offers a similar result for $6 versus $40.
Where can I buy Kiehl's Ultra Pure High-Potency 5.0% Niacinamide Serum?
It's available at Sephora — see the "Where to Buy" links above for current prices.