A small number of Botox units (between and 4 and 6 units total) can be injected into the mental is muscle of the chin to eliminate chin dimpling. The maximal effect of the treatment will be seen around 1 week after injection. Bruising at the injection site is possible, but extremely rare. Results last around 4 months.
The masseter muscle is one of the muscles activated during chewing. It’s located at the “angle of the mandible”, or “angle of the jaw”. Masseter muscle hypertrophy is enlargement of the masseter muscle, and can contribute to a harsh, square look at the angle of the jaw. Botox can be used to relax this muscle, and to soften the look of the lower face. I usually start with 50 units of botox (25 units on each side). When Botox is used to relax the facial muscles that cause fine line, the maximum effect is seen in 7-10 days. When Botox is used to reduce masseter muscle hypertrophy, the maximum effect is not seen for 3 months. Results can last up to 9 months. I recommend repeat injection every 6 months if you would like to maintain your results. Check out what ELLE Magazine has to say about it.
Read about the experience of Botox to the masseter muscle, written by one of Dr. Dara Liotta’s patients, “How I beat my daily grind with Botox.”