We've heard about the chocolate that treats acne and the drink that makes you more beautiful, so now what's next? Why, delicious collagen marshmallows (£10, or approximately $14) with pink grapefruit flavor. Vegetarians beware, as this product contains gelatin.

These Japanese collagen "treats," which are not sold in the US, are now available in the UK. The fluffy puffs supposedly work to help your skin look smoother and less wrinkled, even reducing the appearance of cellulite. What's your take on this beauty food? Do you consider it a tasty treat — or just plain nasty?