Lemongrass is an anti-microbial and anti-bacterial herb. This means it will help limit bacterial or microbial growth on the skin. It can help ward off skin infections as well as lessen skin issues caused by bacterial infections, such as folliculitis and cellulitis. Lemongrass is also fungicidal, which means it helps cure fungus infections on the skin. The herb also acts as an astringent, which constricts the skin. This helps to minimize pores, limit the secretions of oil and provide a temporary skin-firming treatment.