A whole bottle of ampoule has been used. My skin should be overflowing with hydration! Because a whole bottle 22ml of ampoule has been used. Hyaluronic acid is an ingredient specialized in hydration ahracting & maintaining moisture to increase skin moisturization. This ingredient reduces irritating dryness to the skin by forming a hydration membrane That holds skin moisture for a long time. Hyaluronic acid one shot for skin like this!★ Skin that always feels dry whenever & wherever!★ Skin always lacking in skincare no matter how much you apply!★ Skin looking for a sheet mask that absorbs without feeling sticky!