Lemon oil is effective at moisturizing, toning, and purifying the skin. It can reduce the appearance of age spots, fine lines, and wrinkles. Lemons are believed to have originated in India and China. Rich in vitamin C, citric acid, B vitamins, carbohydrates, and a small amount of protein, lemon oil helps exfoliate the skin's surface, providing a mattifying effect. Lemon extract tones the skin, removes dead cells, and reveals the fresh, youthful skin underneath.