Do you use a sleep mask? I always use one during a night flight, ideal. In this way it's clear to everyone that you don't want to be disturbed. But there are also enough people who use a sleep mask daily so it's completely dark at night. The absolute darkness you create with a sleep mask helps to improve the quality of your sleep. The darker it is at night, the more melatonin your body makes. Sleep in style! Today sleep masks are very fashionable, as well as the sleep masks of Bona Notti, designed by renowned designer Chris Notti. She ...