What's Really In Our Food

Can you tell your UVA from your UVB? Do you really understand what it takes to keep yourself, and your family, sun-safe? Petra investigates nanoparticles, discovers what sort of sun-protection we need, and reveals the startling truth about sunscreen application.

Petra looks into the holy grail of personal care products, sorting the science from the snake oil, and asking if spending more is any guarantee of results.

We look into the chemicals in shaving creams, aftershaves and depilatories - and ask just how smooth is a baby's bottom?