Aus Vio luxury pillowcases most comfortable and healthy option for your hair. Pillowcases are the one thing that come in contact with your hair the most, and Aus Vio recognizes the importance of a silk's quality to the health of one's hair. The high quality charmeuse silk that is used in Aus Vio pillowcases contain a naturally occurring protein and 18 amino acids that help rejuvenate your hair while you sleep. Also, the smooth nature of charmeuse silk allows hair to gently glide over the surface of the pillowcase, reducing unnecessary damage from constant rubbing and friction. The high quality Aus Vio charmeuse silk features hypoallergenic properties as well. The small areas between the individual silk threads prevent allergens from collecting in the silk sheet, which in turn prevents the allergens from coming in contact with the skin, nose, or eyes. The natural breathe-ability of the charmeuse silk sheets allow warmth to be retained during the cold winter months, and offers a cool soothing temperature during the warm summer months. 100% Mulberry silk-19 momma (unit of silk weight). 100% Silk charmeuse- refers to a weaving style that results in a reflective lustrous finish