Applying the base and n°17 topcoat start by applying a very fine coat of nail polish. Apply a second, thicker coat of nail polish. To protect and prolong your colour, finish with the base and n°17 top coat, or top coat gel or top coat mat.the ingredients list composing Vitry’s products is often updated. Before using a product, we recommend to read the ingredients list indicated on the products’ packaging. Ingredients : butyl acetate, ethyl acetate, nitrocellulose, adipic acid/neopentyl glycol/trimellitic anhydride copolymer, acetyl tributyl citrate, isopropyl alcohol, stearalkonium bentonite, acrylates copolymer, n-butyl alcohol, styrene/acrylates copolymer, benzophenone-1, silica, trimethylpentanediyl dibenzoate, sucrose acetate isobutyrate, polyvinyl butyral, alumina, dimethicone, trimethylsiloxysilicate [+/- (may contain) ci 15880 (red 34 lake), ci 77491 (iron oxides), ci 77492 (iron oxides), ci 77499 (iron oxides), ci 77891 (titanium dioxide), ci 19140 (yellow 5 lake), ci 77510 (ferric ammonium ferrocyanide), ci 15850 (red 6 lake), ci 74260 (pigment green 7), ci 77266 (black 2) [nano], ci 15880 (red 7 lake), ci 77000 (aluminum powder), ci 77163 (bismuth oxychloride), ci 77007 (ultramarines), ci 77742 (manganese violet)].