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.

Details

Benefits

• Free of fragrance and colorants, this concentrated serum is minimally formulated for skin absorption and efficacy

Key Ingredients

• Niacinamide: form of vitamin B3 known to help visibly brighten skin; when used in topical skincare formulas, it can also help balance skin's surface oil

Research Results

• 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