Barrier Booster Orange Ferment Essence is a vitamin C essence that promotes skin care, doubles hydration, brightens, and protects against environmental pollution and free radicals. This antioxidant-rich essence has a lightweight, fast-absorbing texture of a toner and the powerful efficacy of a serum. It is powered by distilled active ingredients from oranges and enriched with hyaluronic acid and niacinamide. This essence deeply hydrates the skin, giving it radiance, strengthening the skin barrier, and reducing the appearance of wrinkles and fine lines. It prepares the skin for the rest of the routine. Essences come from Korean cosmetics and are part of layering techniques.