Kiehl's invisible barrier balm with Squalane is specifically formulated to help deeply hydrate the skin. Rich in barrier strengthening ingredients like Squalane and Ceramides, this skin hydration stick works to instantly hydrate the skin and strengthen skin barrier, while providing all-day moisturizing support at home and on-the-go hydration. Your skin barrier faces up to 300 disruptions a day from temperature, pollution, touching your face, and exercise. Ultra Facial Barrier Balm deeply hydrates and helps strengthen your skin barrier to help resist external aggressors throughout the day. What It's Good For: Strengthens the skin barrier with each swipe for 5X improved moisture barrier function* Lightweight on-the-go all-day hydration** Blends seamlessly under and over make-up For all skin types, including dry and sensitive skin Key Ingredients: Squalane: Squalane is a highly-refined botanical lipid. With an exceptional affinity to skin, Squalane absorbs easily and is known to help replenish skin's barrier keeping it soft, supple and moisturized. Pro-Ceramides: Ceramides are lipids that are naturally occurring in the outer layers of skin. Pro-Ceramides in particular make up a large portion of a healthy skin barrier. Glacial Glycoproteins: Originally sourced from Antarctic sea glaciers, Glacial Glycoprotein helps to deeply hydrate and maintain skin's moisture balance. How to Use: Swipe on sheer layer up to 4x day Use generously for dry skin, can be used on the body as needed Apply in the morning: as the last step after moisturizer and SPF Apply in the evening: as the last step after moisturizer Elevate your makeup game with this ultimate multi-tasker: Use as a primer for smoother application and a long-lasting makeup look Use as a highlighter for a dewy, radiant look Use as a touch-up before a night out for glowy and hydrated skin *Based on an instrumental test measuring improvement in moisture barrier function 4 hours after single application compared to untreated skin. **Based on an instrumental test after single application.