Use of nanoparticles in cosmetics questioned

Companies are taking insufficient steps to ensure face creams and other products are safe

Stress or in the genes – how did Obama suddenly go grey?

Emine Saner: While many people dread the appearance of grey hairs, Obama is nothing if not an optimist

John Mortimer, writer

Rula Lenska, actress

Carrie Quinlan: What with schoolkids overdoing the fake tan, what's so wrong with just being the colour you are – even if it is grey?

Terry Dinham, managing director, Leisure Group

Emma Cook reviews the best products to clean your face

Martin Freeman, actor

Meera Syal, actor

Alice Hart-Davis tests self-tans, shower gels, blue eyeliners and vitamin C serums