Ultra Pure High-Potency 1.5% Hyaluronic Acid Serum

Hyaluronic Acid Hyaluronic Acid helps skin better retain moisture to improve the look of resiliency and make skin feel more supple and bouncy by delivering skin-strengthening hydration. See full list

Apply 2–3 drops to clean, dry skin in the morning and eveningLayer with other serums as neededExplore our other concentrated facial serums like our 5% Niacinamide serum and 9.8% Glycolic Acid serum.Try out our Hyaluronic Acid serum skin hacks below:Add a drop of our Hyaluronic Acid serum to your liquid makeup (foundation or highlighter) to add a boost of hydration/sheer out the coverage to a tint. Layer our Hyaluronic Acid serum underneath your favorite eye cream for an extra hydration boost. Use our Hyaluronic Acid serum as a highlighter by dabbing extra over your moisturizer on the “C” between the top of your brow arch, temple, and cheek bone. Zone treat your face by applying Hyaluronic Acid serum all over to hydrate skin. Follow with your favorite moisturizer where needed. Layer with our Niacinamide serum to reduce oil & sooth skin.Layer with our Glycolic Acid serum to gently exfoliate & improve texture.

As part of our Kiehl’s Mission Renewal journey, we are providing the Environmental Impact Score to help you make informed decisions about the formulas you use. Kiehl’s is committed to continually improving the impact of our products throughout the product lifecycle, including the production and usage phase. This tool is designed to help assess the relative environmental and social impact of Kiehl’s Products compared to other L’Oréal Group products in the same category in 2020. The calculation method was developed with the help of independent scientific experts and Bureau Veritas Certification, an independent auditor. The score takes into account 14 environmental impact factors all along the product's life cycle. Learn more about the methodology, here. Overall environmental impactCompared to other similar L’Oréal Groupe Products sold worldwide in 2020 Carbon footprint 1g per average amount used 84 per 10mL Water footprint 2 per average amount used Every consumer product has some impact on the environment. A good score here does not mean a product has a positive impact or no impact on the environment. The letters and colors used in this tool are designed to help you make comparisons to other L’Oreal Groupe products in the same category around the world in 2020, so you can make more informed choices. This product currently has a less favorable impact than we aim for, so we have set out an action plan to improve its environmental and social performance over the coming months. The letters and colors used in this tool are designed to help you make comparisons to other similar products in L'Oréal's global portfolio, so you can make more informed choices.*Compared to other similar L’Oréal Groupe Products sold worldwide in 2020 see full information see less information .Manufacturing ConditionsMade in a responsible manufacturing plant Waste recovery: 97% Renewable energy: >99%Packaging Facts % of cardboard/paper certified FSCTM or PEFC: 100% made of recycled material3 including colorant: 20% Refillable or reusable: NSocial impact of the product​ The ingredients and components of this product are sourced from suppliers committed to respect the Fundamental principles of the UN on labor standards. 1 or more suppliers committed to the social inclusion of people from vulnerable communities contributed to making this product.*123Learn More.h-hide-for-D.h-score-D { display:none !important;}.h-hide-for-E.h-score-E { display:none !important;}.h-hide-for-A.h-score-A { display:none !important;}.h-hide-for-B.h-score-B { display:none !important;}.h-hide-for-C.h-score-C { display:none !important;}.h-suppliers-0.h-hide-for-0 { display:none !important;}