"One delicious dab on the lips will give you a taste of what all the Hollywood starlets are losing it over."

Available by mail order from cosmetics company Sephora, the gloss comes in a trio of flavours - blueberry and raspberry, strawberry and melon and dragon fruit and lime.

However, diet experts cautioned there is no quick-fix when it comes to losing weight.

Fan: Jessica Simpson is said to drink low-calorie juices by the same company

Tam Fry, of the National Obesity Forum, said: "People will buy this and it will do nothing for them unless they have already taken steps to lose weight.

"There is only one way to lose weight in the long-term and that is by sensible eating, sensible exercise and making sure you know what you are eating and it is not full of fat, sugar and salt.

"People should pay more attention to what goes into their mouth than what goes on their lips."

Too Faced is not the first company to produce a lip gloss with healthy properties.

Other glosses already on the market claim to use the scent of vanilla to lift mood and the smells of lemon and geranium to curb smokers' cravings for nicotine.