One of Fuse Master's finest products, Super Spray is a very low-lead overglaze that prevents devitrification on kiln fired glass projects and is proven safe for food bearing surfaces. Super Spray will not discolor reds, oranges or other sensitive tones. For easy application, simply brush it onto your glass project or spray it on with an air brush or atomizer. Matures at 1350F or higher.

What is glass devitrification? Glass devitrification is the process by which molten glass is cooled too slowly and thereby becomes crystalline, with a milky appearance, and no longer able to be used as glass.