Dulux® Venetian® Plaster Glaze Coat Matt is a clear water-based matt finish formulated on a 100% acrylic emulsion resin for application over Dulux Venetian® Plaster range. Easy to use, safe and economical clean-up. Protects Venetian Plaster against staining, dirt pick up, pollution and chemical attack. Matt Glaze is film forming and may slightly alter the natural appearance of Venetian Plaster.