Neem leaves powder has been known for years in ayurveda to have antiseptic properties.Mix the neem powder with water to make a paste which can be used on hair for dandruff problems .When used on skin it may help to reduce excessive oiliness. ** ALLERGY ADVICE** Please ally the paste behind the ears for 10-15 mins and wash it off and wait for 24 hours .If there is no redness or itching it is safe to use.