Specifications & Features Capacity: 6ml/Bottle Color: 80 Colors Choices Size 81 is Top Coat; Size 82 is Base Coat Cured:LED or UV Lamp Lasting Period:3 Weeks or Above Features:Healthy and Eco-friendly,Non-toxic tasteless,adults and children can be used,according to the method of operation ,not easy to fall off,etc Package: 1 Bootle UV Gel Nail Polish Professional usage: Step 1.Clean Nails then trim nail surface as normal manicure process. Step 2.Fully shake up the polish,it can make the polish color be balanced.(Important) Step 3.Apply Base coat first,it can make the polish color be longer,cure with UV/LED Lamp.(Necessary) Step 4.Apply gel polish directly,cure with UV/LED lamp for 2 minutes or LED lamp for 30s; Then dry,apply the 2nd layer and cure with UV/lED Lamp again. Step 5.Coat with removable top-it-off,which can make color shining,then cure with UV/LED Lamp. Step 6.Remove the tacky residue on nails with the cleanser.