10g Pink to Rust Glow in the Dark Powder &lt;50 Microns + UV Reactive Pink to Rust Glow in the Dark Powder + UV Reactive &lt;50 Microns (General Purpose Powder Size) Glow for 8+ Hours Strontium Aluminate + Europium & Dysprosium (Safe New Technology) Not-Encapsulated + 535C/1000F Heat Resistant + 10-20 Years Glow Mix with Most Clear Mediums. 100% Reliable, Non-Toxic & Environment Friendly