CND Solar Oil is the multi award-winning cuticle oil that is enriched with jojoba oil and vitamin E which leave your nails stronger, healthier and hydrated and cuticle area nourished and protected. SolarOil™ should be used every day and especially before bed as it then has all night to penetrate the nails while you sleep. Solar Oil can be used over Shellac as it can penetrate down to the nails underneath.