Peppermint (mentha Piperita) : It is also cultivated in USA, Italy, Great Britain and Japan. Its fresh and menthol-like aroma makes it suitable for aromatherapy. Health Peppermint oil is a natural painkiller and relaxant. It reduces body and muscles pain. Its soothing effect cools down muscles as well as reduces body temperature. It is quite helpful in treating sinus and clear nasal passage as well as removing bad breath. It improves blood circulation and plays a significant role in treaating indigestion and bloating. It is helpful in balancing hormones and reducing nausea. Skin Its cooling sensation calms skin rash and redness. It is beneficial for treating acne and clearing your skin complexion. Hair It stimulates hair growth and thickens your hair. It is used in many shampoos for reducing hair loss. Insect repellent Its strong aroma repels insects. You can apply it on the skin while outdoor to keep bugs away. Precautions It is safe for topical use. When used internally it may cause problems like flushing, heartburn, and mouth sores. Peppermint oil can also cause anal burning. Pregnant and nursing women should avoid it, as little information is available about how it will affect them.