Dr Simon Ourian, a cosmetic surgeon based in Beverly Hills, California, claimed that he stumbled upon its unexpected powers by accident while treating his mother who was suffering from migraines after having chemotherapy which had made her hair fall out.

Familiar with Botox’s use as a headache treatment, he injected the chemical – the medical name for a form of Botulinum toxin – into her scalp but was surprised to find that it also appeared to help her hair to grow back.

Read full story via Telegraph.