How to Use 01. After using toner, use it in the next step. 02. Take an appropriate amount and gently spread it from the inside to the outside of your face along the skin texture and absorb it. (Available for eyes and neck) *As soon as the 3 serums are mixed, there is a synergy effect, so mix them gently on your face and absorb them. * Be careful not to pick up your hands when opening and closing the lid.