- Ages 8+
- Adult supervision required
- Washable, safe, and nontoxic, formulated for use by children
- Quality tested, non-toxic formulas and Borax free
- 100% safe for kids and adults

Glow in the Dark products contain a substance called a phosphor. Phosphors slowly re-emits visible light after being energized. When you charge your slime using a strong lamp or using the ultraviolet light of a black light the phosphors become energized and will radiate after the lights are turned off.