Neem Powder: There are many constituents which are found in the Neem leaf. The leaves are rich in organic compounds. Neem leaf powder has anti-septic, anti-bacterial and insecticidal properties. It is used in several herbal cosmetic, health, and hygiene products. History: Neem leaf powder is used in India since the Vedic ages and the Ancient indian text of Ayurveda say it has anti-inflammatory and antiseptic properties for which it is used in several herbal medicines.