Serum & Treatment
Ultra Pure High-Potency 5.0% Niacinamide Serum
The Kiehl's Since 1851 Ultra Pure High-Potency 5.0% Niacinamide Serum is a concentrated facial serum formulated with just 10 ingredients to help visibly reduce oil and minimize the look of redness.
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Product profile
Ingredient analysis
Formula analysis is a rule-based estimate, not dermatological advice. Individual reactions vary. Always patch test new products.
Formula overview
This streamlined serum delivers 5% niacinamide in a simple water-based formula with glycerin and hyaluronic acid for hydration. Propanediol adds humectant support, making this an ideal choice for those seeking a focused, no-fuss niacinamide treatment.
Compatibility
Lightweight, minimalist formula well-suited to sensitive or reactive skin.
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