R&F Encaustic 333ml Paint, Zinc White Handmade in the usa Composed of 100-percent pure pharmaceutical grade beeswax, singapore-grade damar resin and chemically pure pigments Contains zinc sulfide Conforms to ASTM D-4236 Avoid overheating and adding solvents to this product  wax will release toxic fumes when heated above decomposition temperature; do not heat above 200-degrees fahrenheit; use with ventilation