Glow-in-the-dark grout additive - We have expanded our product range to include a new, fluorescent type of powder which is added to our white grout. Depending on how long it is charged, it will make the contours of your mosaic glow in the dark for hours. This glow-in-the-dark powder should be added in proportions between 10% and 20%.
Packing Size: 50g
50g are sufficient for an area from 40x40cm to 55x55cm