A New improved formula that is now crystal clear!! Cures at 275- 300 degrees F. Superior for transfers and multi layer image making. Kato Liquid Medium is the strongest, most permanent Clay available on the market today. Preferred by artists, this new phthalate free formula allows the artist to make molded and flexible features. Use for grouting and adhering polymer clays. Clear Medium finishes projects with crystal-like coating and makes perfect photo transfers. Color Kato Liquid PolyClay works great as a tinting medium for Kato Polyclays and for colorizing transfers.