Micro-Dose Anti-Aging Retinol Serum - RTNL SKIN RENEWING DAY MICRODOSE SRM 1OZBenefitsPrecisely formulated to deliver a daily-strength dose of Pure Retinol for visible results with minimal discomfort including redness, dryness, and peelingSerum helps promote skin tolerance of Pure Retinol with Peptide and Ceramide90% of users, even first-time Retinol users, agree skin feels comfortable and 94% agree texture feels refined**In a clinical evaluation, 100% showed wrinkle reduction and 90% showed improved skin firmness*Regain up to 5 years of youth with visible wrinkle reduction***Easily integrates into a skincare routine, suitable for use day or nightFor all skin types, including first-time Retinol users and sensitive skin typesTSA ApprovedKey IngredientsPure 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 lookingCeramides: lipids naturally occurring in both skin and hair, within Kiehl's formula, they help strengthen the moisture barrier to enhance skins tolerance of pure retinolPeptide: works to enhance skin integrity, helping it receive optimal, visible youth-renewing resultsResearch ResultsBody Anti-Aging*:92% Agree Skin Looks Firmer87% Agree Lines Look MinimizedSuitable For Use on The Hands, Neck, & Chest*Based on expert grading in a clinical study with 54 panelists after 12 weeks.Before & After:100% Showed Reduced Fine Lines and Wrinkles*90% Showed Improved Firmness*94% Agree Texture is Refined **92% Agree Skin Tone Looks More Even **88% Agree Pores Look Minimized **90% Agree Skin Feels Comfortable, Even First-Time Retinol Users ***Expert grading in a clinical test after 12 weeks of use**Consumer perception test after 12 weeks of use - Micro-Dose Anti-Aging Retinol Serum