For one, there's a lack of evidence in that these herbal cleanses provide any significant detoxification benefits. And two, a lot of times they contain strong laxatives that keep you constantly running to the bathroom. Yes, you may lose weight, but it's temporary water weight that you're losing, not fat.

How much weight can you lose with Bootea?

Bootea, which has been endorsed by celebrities including Kim Kardashian, Kylie Jenner and Michelle Keegan, claims to help you lose up to seven pounds in a fortnight by flushing out your digestive system – kind of like a laxative.

How often should you drink Bootea?

When you should take it:

Every second night before bed (starting day 1) for the duration of the teatox.