Kiehl's Since 1851 Retinol Fast Release Wrinkle-Reducing Night Serum 0.94oz

Kiehl's Since 1851 Retinol Fast Release Wrinkle-Reducing Night Serum 0.94oz

An advanced Retinol night serum that helps accelerate skin surface cell renewal to visibly improve fine lines and deep wrinkles.

This fast-acting 0.3% Retinol night serum accelerates skin surface cell renewal with Retinol that penetrates up to 15 surface layers deep into the skin*. Experience visible reduction of fine lines in just 5 days**, and visible improvement in deep wrinkles in 2 weeks***. To ensure maximum efficacy, its innovative packaging isolates a high concentration of pure Retinol powder so it can be freshly mixed into the serum upon first use. With continuous use, this night serum with Retinol helps skin look renewed for a visibly smoother, more youthful appearance.

What It's Good For

• Retinol penetrates up to 15 surface layers deep
• Accelerated skin surface cell renewal in just 5 days
• Visible reduction of fine lines in 5 days
• Visible reduction of wrinkles, including deep wrinkles in 2 weeks
• Innovative packaging that separates a high concentration of pure Retinol powder to freshly mix for application
• 100% showed reduction in wrinkles

* Based on an in vivo penetration test for retinol penetration
** Based on expert grading in a 10-week clinical study of 71 panelists
*** Based on expert grading in a 10-week clinical study of 27 panelists

Key Ingredients

PURE RETINOL
Our formula with Pure Retinol helps steadily accelerate skin surface turnover to bring new, fresh skin to the surface to help address visible signs of aging for skin that’s visibly renewed and youthful looking.

Why We Love It

Our unique powder-to-serum technology is designed for you to personally mix Pure Retinol powder with a lightweight serum base to create a fresh, highly concentrated formula. By activating it upon first use, this Retinol night serum is optimized for faster efficacy and absorption into the skin.