I love this product and I want to speak to all beginners who believe that this lamp does not work :) Indeed the gel varnish catalyze through the lamp, which allows them to harden. After 45sec of exposure, when you hit your fingernail, you feel it is not dry, yet it is! The gel varnish are covered by a "greasy" layer then it must be removed with a lotion "cleanser" (degreasing). I for one simply uses a cleansing wipe and it's perfect! I hope I have helped anyway :)