Why Do I Have an Indentation in Forehead After Botox?

Botox changes the dynamics of brow function.  There are essentially 2 groups of muscles in your brow.  The elevators (frontalis) and depressors (corrugators, and procerus).  When the depressors are treated to remedy glabellar furrow (the "eleven"), the frontalis remains active.  The FDA has approved botox for the glabellar furrow in 2002.  It has since gained broad acceptance among physicians for off-label uses such as crow's feet, forehead wrinkles, platysmal banding, migraines, etc.  The furrow that you have now may be due to the residual activity of surrounding muscles that have remained active while the depressors have been weakened or paralyzed by botox.  See your doctor.  Don't be afraid to address your concern.  Additional botox in the non-treated muscle may remedy this issue.  Good luck!  You could also just wait it out, but it may take 4 months to resolve.

BOTOX itself will not cause an indentation. Botox is a muscle relaxer. However, if certain muscles relax and other muscles are not injected, those active muscles may be working harder and become more pronounced looking. You may have what appears to be a hole but is a depression area between a weakened muscle and a more active muscle. It will go away as the BOTOX wears off. You may also treat it by adding BOTOX to the muscle that is over worked. Just keep in mind that any kind of contra-irregularity in the forehead in regard to BOTOX is temporary and is a result of the way the muscles are working.