Ultra Pure High-Potency 1.5% Hyaluronic Acid Serum - HYALR MOIST PLMP SRM 30ML 1.0OZBenefitsAdd a drop of Kiehl's Hyaluronic Acid Serum to your liquid makeup (foundation or highlighter) to add a boost of hydration/sheer out the coverage to a tintKey IngredientsHyaluronic Acid: helps skin better retain moisture to improve the look of resiliency and make skin feel more supple and bouncy by delivering skin-strengthening hydrationResearch ResultsAfter 1 Week, 83% Agree Skin Looks Replenished*Instantly Boosts Hydration by +89%** Plumper Skin in 1 Week****Reported by consumers in a 4-week study.**Based on an instrumental study.***Expert grading in a 4-week clinical study. - Ultra Pure High-Potency 1.5% Hyaluronic Acid Serum