Brand new formula for the most famous Crystal Nails sealant. COOL TOP 4DARK New formula that does not turn dark colors and warm colors with UV light Bordeaux will not turn purple and Black will remain Black !!! Self-polishing sealant without dispersion, therefore does not require Cleanser cleaning after polymerization. Keeps shine for weeks, doesn't turn yellow. Perfect for all products: Acrylic, Gel, 3 Step, One Step Suitable for sealing gel and acrylic paint decorations Super shiny sealant without sticky layer Polymerizes in 3 min UV and 90 sec in LED.