Glow in the Dark Soft Fabric Paint is a non-toxic, non-flammable aerosol paint recommended for use on light-colored, 100% cotton materials. Once applied, the paint absorbs into materials and remains soft to the touch. It is not permanent and will wash out of fabric. For best results, wash and dry fabrics before painting and do not use fabric softeners. Glow in the Dark Soft Fabric Paint creates glow effects on apparel, kids projects, decorations and crafts without hardening or stiffening materials. Painted materials should be charged by light for at least 10 minutes and will hold a charge for about 30 minutes. Glow in the Dark Paint works best in total darkness or under a black light and does not need to be charged when used under black light. Safe for kids and a fun, non-permanent paint tool!