Nail water decals, otherwise known as ‘sliders' are very easy to use. When soaked in water, the design element slides from the backing paper. And can then be transferred to nails. H2Oh! Nail water decals come from Russia. All the designs created by an NPAs (nail polish addicts) are unique, and each decal has two different complementary artworks for even more fun. Sveta Sanders shows you how to use water decals, so why not give it a go too. You will also need white stamping polish, clean up brush, glass manicure stick, and looking glass top coat for a quick dry finish.