This Ultra Pure 15 Hyaluronic Acid Serum by Kiehl's is formulated to deliver intense hydration and support skin suppleness. It is designed for daily use to help minimize the appearance of fine lines and improve skin texture, leaving the complexion looking smoother and visibly revitalized. Targeting essential skin needs, this potent serum integrates seamlessly into your existing skincare ritual. Apply to the face morning and night to leverage the benefits of high-potency hyaluronic acid for deeply moisturized skin.