No 1 Softener 68 minutes is recommended for European and American population For Asian population with fine soft lashes use 56 minutes No 2 Styler 912 minutes for the American population For Asian people with fine and soft lashes use 910 minutes The exact operating time needs to be tested by a professional person after operation PREMIUM GLUE More viscous than ordinary glue and easier to handle And it is watersoluble FORMULA The product is made from a formula of cysteine It is gentler to use and has less odor One Set Of Products Operates 1020 Customers