How could I change my face shape to an oval one by using Botox treatments? (Photo)

Thank you for your question. In my opinion, Botox is the best option for facial slimming. Injecting Botox® into a muscle causes it to relax and shrink in size. When you inject it into the masseter muscle, it causes the muscle to become smaller and therefore results in a thinner facial appearance. When combined with facial fillers, which can be used to enhance the cheekbones, we can help you achieve a contoured look. 

An assessement cannot be made from a photo.  However, there are ways to improve facial contours.  For a square chin, Botox can be injected into the Masseter Muscles (jaw muscles) to reduce their size.  This may result in a less square shaped jaw line, and more oval contour of the face.  It is best to contact a board certified plastic surgeon for a consultation to discuss your specific needs and to develop a treatment plan tailored to you!  Best wishes,

Hello and thank you for your question.  The
best advice you can receive is from an in-person consultation.  If you have masseter hypertrophy, then botox injections can be helpful.  This decision should
be based on a detailed discussion with equal input from both you
and your surgeon.   Make sure you specifically look
at before and after pictures of real patients who have had this surgery
performed by your surgeon and evaluate their results.   The most
important aspect is to find a surgeon you are comfortable with. I recommend
that you seek consultation with a qualified board-certified plastic surgeon who
can evaluate you in person.
Best wishes and good luck.
Richard G. Reish, M.D.  FACS
Harvard-trained plastic surgeon

Botox can be injected into the masseter muscles, large muscles on the jaw on the lower sides of the face, to reduce the squared appearance that results from enlarged masseters.  You may also benefit from the use of hyaluronic acid fillers such as Juvederm to soften the contours of the face.  I would recommend you consult with physician experienced with Botox and fillers to see what would be best for you.

Square shaped face can be addressed by relaxing and reducing the size of chewing muscles .Masseter hypertrophy or overgrown chewing muscles cause teeth grinding and produce a squareness shape to the face .
Botox injections are very quick , placed in 2- 4 spots on each side of the jaw and take 2 weeks to start to see effect
Full effect is apparent at 6 weeks at which point it can be topped up if wish to achieve more contouring or less teeth grinding. Once adequate jaw slimming is achieved , maintenance treatments are required every 6- 9 months
Dermal fillers can be used to contour the face by making the chin more full in the midline and having more projection downward producing an oval shaped face rather than square
If your chin is "frowning" by which I take to mean is dimpling when you speak or eat , then botox can be used to relax it