This product use under different temperature will become another color under small temperature difference same will become another color so color luster itself magic fantasy and vivid. And can keep 30 days of color and light. Viscosity: around 2000, Suitable for a professional nail to use. Easy to remove. Advantage:Appearance: Transparent. It can keep its own transparent and luster after used for a long time (Raw material color) Odorless Usage: UV, LED and CCFL lamp Curing time: LED: 30 seconds UV/LED 60 seconds (professional standard) Brightness and good fresh brilliant, it can make the color fresher as its good transparency (it can be applied on the white color gel; you can see the effect obviously as most of the topcoat in the market will make the white become yellow). Long adhesive, it can keep 25-30 days.