Sax True Flow Colorburst Glaze Set, Assorted Colors, Set of 12 Sax True Flow Colorburst Glaze is Semi-Transparent and is ideal for one-of-a-kind pieces since every application and every firing will produce different results. Creates multi-colored patterns as well as designs when fired. Create unique dramatic effects by combining other glazes of a similar firing range. Not dinnerware safe due to surface characteristics. All colors are AP Certified non-toxic, except for Peacock Green, which contains soluble copper. Fire to cone 06 For best results, apply 2 to 3 coats of glaze Developed by artist and art consultant, Eric Orr Non-toxic, Lead free