C Silk pillowcases are gentler on the skin of people with acne or sensitive skin than rough cotton pillowcases. Silk pillowcases absorb less of the moisture and dirt and thus may be a better choice for people with acne. Anti-aging and Anti Sleep Crease, decrease wrinkles and improve the appearance of skin’s hydration. Silk pillowcase is supposed to make you cooler through the night, keeping breakout-inducing sweat at bay. Since the pillowcase is made with high-quality silk, it's naturally hypoallergenic and feels cool to the touch and they reduce friction as well.