It’s glow in the dark chalk paste! Chalk this translucent paste over another color for daytime visibility. Light-exposed paste will show in darkness. It’s washable and offers a matte finish. Chalkology Paste Singles include .19 US fl. oz. Chalkology® Paste is formulated for use with Chalk Transfer® designs and Chalk Couture™ surfaces. Can also be applied to other nonporous surfaces.