The purpose of this study is to compare the safety and efficacy of formulation BLI1100 to its vehicle in the treatment of moderate-severe acne vulgaris.

Inclusion Criteria:

• Qualifying Investigator's Global Assessment severity score
• Qualifying number of non-inflammatory lesions
• Qualifying number of inflammatory lesions

Exclusion Criteria:

• Facial hair (beard), excessive scarring, sunburn or other disfigurement that may obscure the accurate assessment of acne grade
• Using medications that are reported to exacerbate acne
• Any clinically relevant finding at their baseline physical examination or dermatological medical history such as severe systemic diseases or diseases of the facial skin
• Have a known hypersensitivity or previous allergic reaction to any of the components
• Patients who have participated in an investigational clinical, surgical, drug, or device study within the past 30 days
• Patients who, in the opinion of the investigator, should not be included in the study for any reason, including inability to follow study procedures