The Isntree Hyaluronic Acid Toner utilizes multiple forms of hyaluronic acid to deeply moisturize the skin. It's an essential item for those looking to quench thirsty skin, featuring a blend that includes trehalose and glycerin for added hydration. Reviewers have noted it's particularly effective for dry and dehydrated skin types, absorbing quickly without leaving a sticky residue. Its gentle formulation is also suitable for sensitive skin, soothing irritation and promoting a healthy skin barrier.