Water-Based | Low Gloss Finish | Food-Safe | Non-Toxic | Candle Safe | Environmentally Friendly Can seal: Concrete, Cement, Clay, Plaster, Other Porous Materials  Professional grade, water-based acrylic sealer designed to enhance and protect concrete with a low gloss finish. Safe and suitable for candle vessels. Formulated to work with porous materials. Specifically designed for small makers, DIY enthusiasts, and everyone in between. Low VOCs. It creates a durable, hard coating that’s resistant to water and stains. And no, it’s not milk ☺