baby tooth brush trust eatable-class silicone material which is good quality and identified as food class material,the milk tooth burshes are the best health care baby necessities that without any chemical impurities,safe,non-toxic,puretransparent,high tension and can be boiled in boiling water,Useage:1put the brush cover on the mother's forefinger ,then hold the baby and let it lie on it's back or lie low and brush the baby's milk tooth ,mouth and tongue.2:baby will feel itching before teething,mother can put the baby tooth brush cover on her forefinger to help the baby knead its gun,.