What It Is: A concentrated facial serum formulated with just 10 ingredients to help visibly reduce oil and minimize the look of redness. Product Details: With 5% Niacinamide, this serum is formulated with just 10 ingredients to help visibly reduce excess oil and minimize the look of redness. Free of fragrance and colorants, this concentrated serum is minimally formulated for skin absorption and efficacy. 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. Key Ingredients: 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. How to Use: In the morning and evening, apply 2–3 drops to clean, dry skin. Try out Kiehl's Niacinamide Serum skin hacks below: Zone treat your face by applying Niacinamide Serum to areas prone to oiliness and breakouts. Follow with your favorite moisturizer where needed. Layer with Kiehl's Hyaluronic Acid Serum to hydrate & rebalance skin's moisture. Layer with Kiehl's Glycolic Acid Serum to gently exfoliate & improve texture. 1 oz./ 30 mL Full Ingredients^: Aqua/Water, Niacinamide, Glycerin, Propanediol, Methyl Gluceth-20, Hydroxyacetophenone, Sodium Hyaluronate, Caprylyl Glycol, Carbomer, Sodium Hydroxide ^Please Note: This ingredient list is subject to change. Please refer to the product packaging for the most up-to-date ingredient list.
