Lemongrass Powder, Cymbogogom citratus the main constituent, citral, was discovered to be a strong, cleansing antiseptic, and used to deodorize clothing and footwear.and fatigue. When you’re having trouble sleeping, lemongrass can also work as a mild sedative to help you get a good night’s rest. It can be used as a decoction or an infusion. Lemongrass is uplifting, stress relieving and has a light lemony scent.