Teeth whitening scrubbers key part is the high density compressed melamine foam strip,as is known to all,melamine foam is no harm to human health and due to it contains millions of nano-holes,when the foam gets wet,it will creat unimagnatively strong absorbance of dirt.

Compressed melamine foam got twice more quantity of nano-holes than ordinary melamine foam,so when you use it to brush your teeth gentlely,it will absorb the stubborn dirt of your teeth and make your teeth clean and white.The whole process is purely physical,it does not require any chemical additive,only water is OK.