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Kiehl's Since 1851
Ultra Pure High-Potency 5.0% Niacinamide Serum
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Ultra Pure High-Potency 5.0% Niacinamide Serum is only available to BlueRewards members
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With 5% Niacinamide, this serum is formulated with just 10 ingredients to help visibly reduce excess oil and minimize the look of redness.
Key Benefits
- Free of fragrance and colorants
- Concentrated serum
- Formulated for skin absorption and efficacy
- After 1 Week, 92% Agree Skin Feels Soothed*
- Instantly Reduces Excess Oil by 58%**
- Reduced Blemishes in 1 Week***
- *Reported by consumers in a 4-week study.
- **Instrumental measurement in a 4-week clinical study.
- ***Expert grading in a 4-week clinical study.
UPC
3605972791238
Benefits | brightening |
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Concerns | redness and irritation |
Formulation | liquid |
Ingredient Preference | niacinamide; fragrance free; sulfate free; silicone free; paraben free; antioxidants |
- Niacinamide: The form of Vitamin B3 used within Kiehl's formulas, is known to help visibly brighten skin. When used in topical skincare formulas, Niacinamide can also help balance skin’s surface oil.
Aqua/Water , Niacinamide , Glycerin , Propanediol , Methyl Gluceth-20 , Hydroxyacetophenone , Sodium Hyaluronate , Caprylyl Glycol , Carbomer , Sodium Hydroxide
- In the morning and evening, apply 2–3 drops to clean, dry skin.
- In the morning and evening, apply 2–3 drops to clean, dry skin.


Kiehl's was founded in 1851 as an old-world apothecary in New York's Lower East Side neighborhood. Their fine formulations have always been made with the most unique natural ingredients found the world over. Today, Kiehl's serves customers everywhere skin and hair care formulas derived from the most unique natural ingredients.
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