Benefits/Features Complete care for your nails thanks to the new Nail Expert treatment range. Golden Roses new Nail Expert treatment range provides your nails with the necessary care they need through a unique combination of patented ingredients such as botanical extracts, vitamins (A, C, E, F), stem cells (rose, almond oil) and much more. The Black Diamond Hardener offers: Harder and stronger nails with black diamond particles. Dual patented ingredients of black diamond microparticles and hardening agents, instantly strengthens thin and brittle nails by building a shiny yet protective shield, which prevents nail breakage and splitting after 4 weeks of regular use.* dermatologically tested - paraben free - waterproof - gluten free - cruelty free *results after 4 weeks of testing. use shake the bottle lightly