Silk Mask is most effective in preventing the penetration of water droplets when used to protect the face, and has the least absorption of water because of its strong hydrophobicity. In short, a mask made of 100% washed silk with water repellent water is as effective as a mask, but unlike the latter, it is hydrophobic and can be sterilized for immediate use. Silk also does not irritate the skin or increase local humidity around the face beneath it, making it suitable for prolonged wear, and avoiding accidental stimulation of face touching. C SILK face mask also comes with a fabric meltblown filter to anti-dust and anti-bacteria.