Acne vulgaris is the most common skin disease that affects areas containing the largest oil glands, including the face, back, and trunk (Leydon, 1997). Normal skin commensals including Propionibacterium acnes, Propionibacterium granulosum, Staphylococcus epidermidis and Malassezia furfur, proliferate rapidly during puberty and are often involved in the development of acne (Hamnerius, 1996). Propionibacterium acnes has been described as an obligate