Handmade in the usa. Pigment sticks are high quality oil paint with just enough natural wax added to maintain a solid stick form. Contains c.p. cadmium sulfo-selenide. Conforms to ASTM D-4236, this product contains a chemical known in the State of California to cause cancer. Contains cadmium or cobalt compounds which can cause cancer by ingestion; (risk of cancer depends on duration and level of exposure); do not swallow, wash hands and face after use and before eating or smoking; if swallowed, see a physician