Can you really DRINK yourself beautiful Gisele Bundchen says she does…
01:35 GMT, 12 November 2012
Supermodel Gisele Bundchen, Anthea Turner and Carol Smillie believe in drinking their beauty products.
No, they're not glugging Creme de la Mer, but rather drinks that contain collagen, a protein in skin that gives it a youthful look.
The brands behind these drinks – including beauty'in Beauty Drink and Pure Gold Collagen – claim they boost collagen levels in the skin. Britain is late to the party.
Does Gisele Bundchen have a collagen drink to thank for this face
Brazilians can't get enough of the stuff and in Asia, big beauty brands such as Shiseido have developed their own collagen shots.
According to analysts Datamonitor, the global market in such drinks is expected to rise to around 41.3 billion by 2014. But are they an anti-ageing miracle
Pure Gold Collagen drink sells for 35.99 for a ten day supply
Or, given that Pure Gold Collagen sells for 35.99 for ten days' supply and a bottle of Beauty Drink is 3.50, is it a triumph of marketing designed to relieve us of our cash rather than our wrinkles
'I just haven't seen any evidence that explains why taking collagen orally should improve the quantity of collagen in your skin,' says dermatologist Dr Sam Bunting.
'The collagen in a drink is broken down in your stomach. There's no direct channel to the skin.'
Despite the expert disapproval, there are plenty of testimonials on the Boots website from women singing the praises of the drinks. This might be because they also include vitamin C and vitamin E.
'These vitamins have been proven to be beneficial for the skin,' says Dr Stefanie Williams, of London's European Dermatology Clinic. 'They are also known for their ability to hydrate and moisturise.'
But you don't need to spend a fortune on a collagen drink to get these vitamins.
Holland & Barrett sells 100 vitamin E capsules for 4.55 and 250 vitamin C caplets for 9.55, all of which will last a lot longer – and be more likely to work than a sugary 'beauty drink'.