4+. The real solid liquid. crayola.com. Questions/comments call 1-800-Crayola (800-272-9652) M-F, 9 am - 4 pm ET. Safety Information: ACMI AP: Art & Creative Materials Institute certified. Conforms to ASTM D 4236. All Crayola art materials are nontoxic. All Crayola art materials are nontoxic. Made in USA.