Botox cannot recontour the jawbone.

However, by blocking the nerve stimulus to the jaw muscles, it does relax the activity of those muscles, which thins the lower face and reduces the squareness of the jaw.

In the past, achieve an oval shaped facial appearance required bone contouring surgery with its attendant lengthy postoperative recovery time and other potential risks.

Today, Botox treatment has been developed to achieve these changes.

The procedure involves injecting the masseter muscle or the jaw muscle to change a square lower face into a slimmer, more feminine lower face without downtime.

The Botox treatment can reduce the size of the jaw muscle by 20 to 30 per cent. The result will occur gradually over the course of few weeks.

The effects should last a little longer than Botox injection for wrinkle reduction, although it varies from individual to individual.