Bourjois, for instance, has just launched 10-Hour Sleep Effect Foundation ( 12.75).

As the name suggests, this is a light, fresh foundation that is supposed to make you look like you had 10 hours sleep when you had, em, none. Rimmel has also jumped on the bandwagon with its new Recover Foundation . . . you know the ad with Kate Moss in the taxi stripping from night to office gear? Just remember one thing ladies, no matter how good these foundations are, they won't stop you stinking like a brewery in the morning.