Will Botox in the jaw line make my skin sag?

Botox (as well as the other neuromodulators, Dysport and Xeomin) have been used to treat the masseter muscle, as in this case, to contour the lower face. When placed along the jawline and into the vertical cords on the front of the neck, they are also used to achieve the so-called "Nefertiti Lift."  In this technique, by injecting the platysma muscle with neuromodulators in these locations, the muscle is weakened just enough to allow the muscles of the face to gain an advantage that results in upward pull on the jawline and upper neck, all of which is intended to create the ideal, chiseled profile of the famed step mother of the pharaoh King Tut. Given the fact that Botox can be employed in this fashion, it is unlikely therefore that the sagging described relates to the Botox. More likely is that age-related loss of the volume within the fat pads of the cheeks, which can begin in a person's thirties, may be contributing to this and to the beginnings of the deepening of the nasolabial folds (smile lines). Consultation with a board certified aesthetic core physician with experience and expertise in the use of fillers, volumizers and neurolmodulators is your best bet for determining how to proceed.

Thanks for your question. It is difficult to answer your question without photos. However, generally speaking Botox can be used for treating large massetter muscles (angle of the jaw) very effectively and it can give a more sleek shape ot the face for the right candidate.  Best wishes, Dr Sajjadian

Botox for masseter reduction effectively treats the muscle that causes fullness along your jawline and the angle of your jaw (sides of your lower face) but it does not affect your skin.  It will not make your skin sag, nor will it significantly "lift" the skin.  It will simply reduce the volume of the lower third of your face, thereby tapering its appearance. 

Botox along the Jawline helps soften the masseter muscle.  This allows thinning of the face.  You should only have these injections by an Botox expert as injections in the wrong place and lead to unwanted side effects such as asymmetry of your smile which can last for several weeks to months.  This treatment will not lead to loose skin.Good Luck

Botox is common injected into the masseter muscles to shrink them.  It help narrow the lower aspect of the face to improve facial balance and slenderize the jawline.  The facial skin is elastic and will contract over the shrinking muscle to prevent sagging of the skin.  The sagging skin you are noticing is most like a normal change in the face as one ages.  I hope this helps.