How Does Botox Work?
Botox blocks signals from the nerves to the muscles. The injected muscle can’t contract. That makes the wrinkles relax and soften. Botox is most often used on forehead lines, crow’s feet (lines around the eye) and frown lines. Wrinkles caused by sun damage and gravity will not respond to Botox.The effects from Botox will last four to six months. As muscle action gradually returns, the lines and wrinkles begin to reappear and need to be treated again. The lines and wrinkles often appear less severe with time because the muscles are being trained to relax.Temporary bruising is the most common side effect of Botox. Headaches, which end in 24 to 48 hours, can occur, but this is rare. A small percentage of patients may develop eyelid drooping. This usually ends within three weeks. Drooping usually happens when the Botox moves around, so don’t rub the treated area for 12 hours after injection or lie down for three to four hours.
The most common side effect of Botox injections is temporary bruising. Other possible side effects include:
- Respiratory infection
- Flu syndrome
- Blepharoptosis (drooping of the upper eyelid)