Neem, for centuries has been used for its medicinal benefits. Every part of the neem tree can be used, including leaves, flowers and the bark. There are a whole lot of home remedies, but let me tell you, mix neem leaves paste with fresh turmeric and apply on the face. Let it stay for half hour and wash it off with cold, it works wonders. You can follow this once a week. It clears the acne and reduces scars and blemishes. Neem is also effective in treating dry skin, itchy scalp, skin ulcers and many other disorders. Try it out and your problems will vanish.