What it is: The ISNTREE Ultra-Low Molecular Hyaluronic Acid Serum is a deeply hydrating facial serum that delivers moisture across multiple skin layers using 14 types of hyaluronic acid, including ultra-low molecular forms. Known for its lightweight, non-sticky texture and soothing ingredients like madecassoside and panthenol, this Korean serum is ideal for boosting skin hydration, plumpness, and barrier strength—especially for dry or sensitive skin types. Product Size: 50ml Product From: Korea