Am feeling like haggard old bat, and am going to have to stay up half the night working followed by a long train journey, so tomorrow will be even worse. What potion or lotion can I buy on my way home which will enable me to face a forbidding mildly intimidating collection of senior colleagues with some degree of confidence and illusion of youth?
Can go past Boots and Neal's Yard, but will have five minutes flat to choose...