... crystal powder.Average particle size range: 25~35um.Luminous color: Blue-green.Water resistant.Free of dangerous, toxic, heavy metals, radiation. ... Friendly to human and environment.Applicable in water based paint, plastic, resin, rubber, etc.Dosage range: 5 ... Glow in the dark pigments (glow in yellow-green, blue-green, sky-blue, blue-purple, red, orange, etc.)2. Glow in the ...