Polymer clay is an artificial low-temperature polymerization clay,polymer clay material is a food grade packaging materials(PVC), a human non-toxic,harmless, non-irritating safety materials,use it to make animal shapes earrings,both beautiful and special,safety and healthy. If stained with with dust,can be washed off gently by water. Note: 1.Don't exposure in the sun, or the color will fade. 2.After cleaning, it is best to natural air drying,do not take they on the sun. 3.Should not be placed in places where there are dust and oil, it is easy to adsorb dust,much trouble to wash.