did not work [SEP] it did not help whiten my teeth whatsoever it really does make a mess in your sink but like way more than you would think i don t make this much of a mess while using toothpaste i don t understand why it makes a tremendous mess when using this i m spitting it out into the sink it just seems to go everywhere it s crazy unless my teeth are as white as they re going to get which i don t think they are it did not help whiten my teeth in the least