Neem oil is second to none for protection against insects and mosquitoes. So neem oil is very effective in preventing dengue. Neem oil contains anti-oxidants. It is very beneficial for the skin. Doesn't show signs of aging easily. The fatty acids of this oil blend with the skin to make it more flexible, remove red spots on the skin, and heal acne scars. Neem oil prevents eczema. It also inhibits the production of melanin in the skin. Neem oil helps to relieve dryness of the scalp. Applying this oil on the scalp removes dandruff. People who have scalp acne problem can apply this oil on their scalp. People with oily scalp can also apply this oil. Neem oil works very well to remove roughness of hair. Regular application of this oil on the head stops hair loss. Those who have itchy scalp will benefit from using neem oil.