Botox Only Lasted Less Than 2 Months?

Botox weakens muscles by interfering with the chemical messages sent to them by nerves. Eventually, the nerve will repair itself to a point that new chemical messages can be sent, allowing the muscle to begin to work again. For lasting results, the amount of Botox used must be enough to quiet all of the small nerves that direct the muscle activity. If too little Botox is used, the muscles may begin to work again, as in your case, in a month or two. Assuming that the correct muscles are... more

Botox is the proprietary name for botulinum serotype A. It works by inhibiting the release of acetylcholine, an important neurotransmitter. The duration of Botox depends on the quantity used, the amount administered, and the amount the particular muscle is used. Patients typically see results lasting from four to five months.

Botox works b;y blocking the transmission of acetylcholine ( this always seemed to be answer on physiology questions back in medical school) from the nerves to the affected muscle. Acetylcholine is a nurotransmitter that send a message to muscles telling them to contract. When Botox blocks the effect of acetylcholine, the muscle loses the ability to contract and relaxes. As a result, the wrinkled areas smooth out and softer. With time the body finds a new area to transmitt... more

The effect of the botox should last about three months. Some patients have hyperactive muscle . The other favtors is the # of units used . Check with your doctor.  Technique and knowledge of the facial muscle anatomy is important too.