Silk Pillowcase Set: Indigo FlowerA one of a kind work of art that is healthy for your skin and hair. Silk contains over 18 amino acids that hydrate, heal and keep you healthy. Set of 2 100% Silk Charmeuse Queen Standard Pillowcases Indigo is a special plant, one of the oldest known natural dyes. When you submerge the dye bath at the just the right moment it creates a magical and truly unique "fractal flower" (as we like to call it)