During the daytime glow in the dark non-slip tape appears to be a mild green shade, in darkness or any lights out scenario it emits a bright white light. Photoluminescent Safety-Grip can be charged by either natural or artificial light sources. The duration of the light emission varies according to the amount of light received. It is typically released over a period of a few hours. None of the photoluminescent materials produced by Heskins contains any radioactive products, so can be used in many environments.
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