We are Factoy. Welcome visiting !Features:Color Chart 48 ColorsCertificate:Our Factory:APPLICATION1. Wash hands with liquid soap and water.2. Remove cuticle from nail plate with a cuticle pusher.3. Remove the shine from the nail plate using a buffing block, and remove dust with nail wipe. 4.Base Coat application. Apply a thin coat to each nail of all five nails on one hand .5.uv soak off gel polish colors application . Apply a thin coat of gel polish color to each nail surface on four nails on one hand. after curing then apply thumb .6.apply a second thin coat of gel polish to complete nail using the same process 7.Top coat application.Apply a layer top coat to each nail surface of all four nails on one hand. after curing then apply thumb . 8. Wipe all nails with gel cleanser .If you like our products, you can contact with us freely. Thank you.