Can someone please tell me what a pro-vitamin is? I keep seeing references to stuff like Pro-vitamin B12 in shampoo adverts and haven’t the faintest idea what one is. Presumably it’s just more advertising science babble.
The ads never quite explain what these substances are supposed to do. Not surprising given that hair is 100% dead which makes it a trifle difficult to feed it to make it ‘healthy’.
Posted 28 April 2004, 21:28 BST