No chemicals are used in this product. Please be aware that there may be cases where it is made of wood. There may be uneven color on the material. There may be a characteristic smell of the material during use, but this is not a problem with the quality of the product. Toothpicks are sharp, please keep out of reach of children. Toothpicks have a sharp tip, please be careful when opening. Please do not use chopsticks or toothpicks for purposes other than eating.