In this Phase 3, multi-center, double-blind, randomized, vehicle-controlled, parallel-group pivotal study, participants will be admitted only after a written informed consent has been obtained and after all inclusion/exclusion criteria have been met. Male and female participants at least 9 years of age with facial acne vulgaris will be eligible for enrollment for daily treatment with S6G5T-3 or its vehicle S6G5T-8, for 12 weeks.