Botox: what is it, who uses it, and what are the risks associated with injecting the deadliest substance known to man?

For those fighting the losing battle against ageing, Botox injections have long been consider a risk worth taking.

A multibillion dollar industry, millions of people worldwide use the drug for cosmetic purposes, and beauty salons and clinics in Hong Kong charge between HK$3,000 and HK$10,000 per treatment as the image conscious battle wrinkles, and crows feet, in an attempt to maintain a youthful complexion.