Mustering up the energy to shower when you are dead on your feet is a must to help rid yourself of a no-sleep appearance. Take a warm shower and use an exfoliating brush on your body. Also, use a gentle exfoliating wash on your face. This helps brighten the skin, especially if it's pale from lack of sleep. After showering, moisturize your skin, as lack of sleep is dehydrating and can cause the skin to look more wrinkled.