Eyes are the important part of our body. However, many of us get trouble in dark circles, it can develop at an early age. There are many causes for it, hereditary factors, lack of sleep, illness, stress and nutritional deficiencies. Many people have many ways to cure dark circles, cypress oil is the one way of it. Cypress oil is a natural ingredient acquired from the steam distillation of stems, twigs and needles. Experts say that cypress oil is an astringent, which means that its properties enable it to strengthen gums and tighten muscles of the body. So, cypress oil can work for dark circles in some certain to tighten muscles of the eyes. You'd better consult doctor before using it to beautify your eyes. Besides, we can also use other ways to improve our eyes. First, get a lot sleep. Get enough sleep. Second, grate raw potato, apply the juice under your eyes for 10 minutes. Third, drink more water to reduce the dark circles.