Very disappointed with these item. It’s not like my teeth are discoloured, but they make it look instant and brilliant white.I did email and was told to leave the colour corrector on my teeth, so yeah I can go to work with purple teeth, tongue and gums..That doesn’t work…. Toothpaste…, expensive watermelon. Lovely taste Doesn’t work and the tooth whitening powder…. Didn’t work. I can see no difference what so ever!!! Save your money guys. Scam ☹️