Shellac Untitled Bronze - CND The Shellac system is equipped with a base layer, a color layer and a cover layer. For the application of these varnishes, a corresponding 36 Watt UV lamp is used. This method of application ensures durability for 14 days without defects and can be removed in 10 minutes. Shellac products offer a complete range of colors that are easy to apply and easy to remove. It is a thin and flexible nail polish, so not only does it look natural, but it also provides natural nail protection. Shellac products from CND are applied like a varnish. It wears like a gel. It is removed in a few minutes.