A very dark grey that is almost black. Geleration is a synergistic line of professional products developed to deliver optimal results that last for 3 to 4 weeks. The GELeration System meets JESSICA?s high-quality standards to care for the health and growth of natural nails, with ease of application and removal. All GELeration colour is 7-Free: No Formaldehyde, Formaldehyde Resin, Toluene, DBP, Camphor, Xylene or Ethyl Tosylamide.