20 gram/bottle, 8 packs/set 1) Color: Green Yellow, Aquamarine, Sky Blue, Grine, Blue, Yellow, Orange, Pink 2) Life Span: About 3 years 3) How to Use: , Just apply to the surface of the object. Place it in strong light environments such as sunlight and then transfer it to a dark environment. The thicker the layer you apply, the better the luminous effect.