Bacitracin is an antibiotic that is a mixture of closely related antibacterial molecules. Bacitracin can inhibit the growth of many kinds of bacteria, including S. aureus and P. acnes.
Bacitracin is applied topically for the treatment of acne. However, user and research reports suggest that Bacitracin is not an effective acne treatment, particularly for moderate to severe inflammatory acne. Triple antibiotic ointments (eg. Neosporin) usually include Bacitracin as an active ingredient.