Kylie Jenner uses this whitening kit. But does it actually work?

This is the HiSmile Whitening Kit. It's basically a teeth whitening system designed for millennials.

It comes in a neatly designed box and includes three gel syringes, a rubbery mouth tray, LED light attachment, and a results guide.

You use it for six days, which according to the HiSmile website, can get your chompers up to eight shades whiter.