Lemon oil comes from cold-pressing the lemon peel and not the inner fruit. Lemon Oil is a good aromatherapy oil, enhancing the mood and helping in relaxation. A lemon oil-soaked cloth (with about 10 drops of oil) will help spruce up your tarnished silver and jewelry. Lemon oil can also be used for cleaning wood. Add 2 drops of lemon oil to a glass of water 2-3 times daily to support your metabolism and promote weight loss. Lemon is a very versatile essential oil, as it can be used for cleaning, as a beauty product and to boost your health.