Botox

When scientists discovered Botox in 1887 they thought it was nothing more than a handy anti-serum for Botulism. They couldn't possibly have foreseen that it would become one of the most popular cosmetic anti-ageing treatments of the noughties.

When injected, Botox relaxes contracted muscles that form lines and wrinkles, leaving the skin looking smoother and younger.

We've all heard horror stories about people being left with expressionless faces, but the technique has been honed so that only specific muscles are targeted, leaving the rest of the face to be as expressive as normal, just with less lines and wrinkles.