While millions of women are snapping up age-defying skin creams, the latest miracle cure for a sagging face has just arrived – nightingale poo.
The bird droppings, applied in a 90- minute facial, are packed with an enzyme called guanine – an amino acid which heals the skin, experts claim.
The treatment has already been used by Japanese geishas to remove make-up and leave the skin silky smooth, while monks polish their shaved heads with the droppings.
But, before you squirm at the thought of people scraping up bird excrement from city pavements or car windscreens, the poo is thoroughly purified before being lathered on to your face.
'The droppings, which are applied as a mask with Japanese white clay, are completely safe and treated under UV light to remove bacteria,' said Hari Salem, owner of Hari's in Knightsbridge, West London.
'We have been trying the nightingale facial out and it has been an unbelievable success for treating tortured, dull and sun-damaged skin'.