An Open-label Study That Will Test a Second Treatment Session of RZL-012.

This is a Phase 2, open-label study in which subjects seeking further improvement of their SMF will be treated with a second treatment session of RZL-012. The second treatment session will be offered to subjects previously treated with RZL-012 under protocols RZL-012-SMF-SWMTG-P2US-001 or RZL-012-SMFC-P2US-001. Subjects who fully completed either of the trials and whose C-CAT score is 2, 3 or 4 will be eligible to participate in the new trial. For each subject, the study will consist of a screening period, baseline period in which subjects will receive a second treatment session of RZL-012 and a follow-up period. RZL-012 will be administered during a single treatment session via multiple injections into the submental area under the chin. Subjects will thereafter be monitored for safety and efficacy for at least 84 days.