Lemongrass offers as aroma that is thought to be refreshing, stimulating, increases concentration and alertness. Lemongrass oil is also said to help relieve symptoms of fatigue, relieves aching muscles, aids in digestion, acts as an insect repellent, soothes gastric infections and. When applying lemongrass to the skin, it should always be diluted. In this form it is an astringent and helps treat acne and oily skin. Lemongrass acts as a good skin toner, but it must be well diluted and used with care. Lemongrass blends well with cedarwood, bergamot, geranium, citronella, rosemary, lavender, palmarosa, tea tree and other oils.