RANGER-Melt Art-Heat It Inks. These heat safe dyes can be used in a variety of ways to color embossing enamels, on fabrics, with polymer clay, or wherever you need a permanent dye. This package contains one set of three ink bottles: .5 fl oz/15 ml each. Available in various color sets: each sold separately. Non-toxic. Acid free. Conforms to ASTM D4236. Made in USA.