The EQQUALBERRY Hyaltoin Flooding Serum is a hydrating and moisturizing product from the Korean skincare brand EQQUALBERRY. Formulated with hyaluronic acid, ectoin, and ceramides, it is designed to cool and hydrate dry and combination skin. The serum features a potent combination of 11-layers of hyaluronic acid for deep, long-lasting moisture, along with ectoin and ceramides to strengthen the skin barrier and lock in hydration. The formula is suitable for dry and combination skin types. Some users with sensitive skin have also reported that the serum was effective and non-irritating. The serum is intended to soothe, cool, and provide intense, lasting hydration.