There is a huge billion-pound industry worldwide based on avoiding or slowing down the ageing process. Beauty products that promise to reduce wrinkles and leave your skin looking youthful and hydrated, for example, are immensely popular – and can cost a small fortune.

On top of this, in recent years controversial cosmetic procedures such as Botox injections have become more and more commonplace.

While some of these methods might produce the results people are after, they are not the only…