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Our safety-grade photoluminescent (also known as glow-in-the-dark) materials are inert, waterproof, non-toxic, non-radioactive and can be charged over and over again. A full charge of 8 or more hours of luminance on DHi's AfterGlow® photoluminescent materials is achieved by exposing the PL material to:
- 3-4 minutes of ultraviolet (black) light, or
- 7-8 minutes of direct sunlight, or
- 21-23 minutes of fluorescent light, or
- 24-26 minutes of incandescent light.
