Studio Acrulics Phosphorescent Gel 100mL (5 Colors). Absorbs natural or artificial light and re-emits it in the dark. The color of the phosphorescent gels makes it easier to distinguish day colors, with the exception of the non-tinted gel. Apply preferably in thickness 832112 (3167868321122) - Green 832113 (3167868321139) - Turquoise 832114 (3167868321146) - Blue 832116 (3167868321160) - Yellow 832117 (3167868321177) - Undy-green