Botox is used to treat and prevent wrinkles and creases. Botox Cosmetic is FDA approved to treat glabellar frown lines.  These are the vertical lines between the eyebrows that result when one frowns.

Botox is also used to treat other wrinkles.  Mostly these are the horizintal wrinkles in the forehead (those that occur when you raise your eyebrows) and crowsfeet.  Botox is not technically FDA approved for treatment of these but doctors are allowed to use medicines for "OFF LABLE" usages.

Botox works by blocking muscle activity so it works well for wrinkles that are caused by "muscles of expression" such as those in the forehead.  But it doesn't work so well for "muscles of function" like those around the mouth that are important for function of the lips.  Read about dermal fillers like Restylane, Perlane, and Juvederm for treatment of these. 

Visit Dr. Hoffman's website at American Society of Plastic Surgeons for detailed BOTOX information:  http://www.plasticsurgery.org/patients_consumers/procedures/Botox.cfm?CFID=96341114&CFTOKEN=36736502

Dr. Hoffman and his nurse Terri Goehner use Botox in his Palo Alto and San Jose offices to help their patients keep the fresh youthful look they desire.

Botox, in combination with dermal fillers like Restylane, Juvederm, & Perlane can be used to perform a "Liquid Facelift"  thus preventing the need for a surgical facelift.