A Study to Assess BOTOX Injections for the Change of Masseter Muscle Prominence in Adult Participants

Inclusion Criteria

• •Participant meets the following criteria:
• •* Bilateral Grade 4 or Grade 5 Masseter Muscle Prominence (MMP) (identical grades for left and right sides of the face), as determined by the investigator using the Masseter Muscle Prominence Scale (MMPS).
• •* Bilateral Grade 4 or Grade 5 MMP (identical grades for left and right sides of the face), as determined by the participant using the Masseter Muscle Prominence Scale - Participant (MMPS-P).
• •* Investigator and participant scoring of MMPS and MMPS-P must be the same.
• •Body mass index (BMI) ≤ 30 kg/m\^2 using the calculation: BMI = weight (kg)/height (m)\^2.