What to wear between your skin and your corset so you don't get friction burn, sores and pressure points. Wearing a liner or shirt under your corset can protect your skin from damage, wick up moisture and prevent sweat and dirt from collecting on your corset. The cleaner your corset stays, the less often it needs to be washed, and the longer the "life" of your corset (since both sweat and washing weaken the fibers). The healthiest fibers for your skin are natural fibers: cotton, silk, and bamboo. I sometimes wear nylon or polyester blends since I don't have a sweating problem, but it's advisable that anyone who has sensitive skin/ excessive sweating use natural fibers. I recommend that the material has between 5-10% spandex or lycra so that it stretches well, and it will contract with your waist instead of wrinkling.