100% synthetic polypropelene glow in the dark hair extensions. This hair is white under normal light and glows bright green in the dark. It will glow brighter if you let it "charge" in the sun or under a bright light a bit.
Since this hair isn't kanekalon, dreads made entirely from it may not hold up as well over time, but it will work for streaks or blends.
Unlike most types of 100% synthetic braiding hair, glow in the dark hair melts under an open flame similar to kanekalon; it does not burn or turn black.