The fibers are finer than viscose rayon. These were found to include PVC, polyester, rayon and viscose, all derived from harmful chemicals. Gauze dressing is made up of woven or non-woven fibres of cotton, rayon, and polyester. Tampons are made of cotton, rayon, polyester, polyethylene, polypropylene, and fiber finishes. Recommended care for regular viscose rayon is dry-cleaning only. The first commercial viscose rayon was produced by the UK company Courtaulds Fibres in 1905. It can be made of various fibres, including silk, nylon, polyester and rayon. The first commercial viscose rayon was produced by the UK company Courtaulds in 1905. In addition, it acknowledges cotton poplin, broadcloth, rayon, or silk as appropriate. The suit is made of chiffon, which is a sheer silk or rayon cloth. The curtains, made of rayon silk, measured . Aside from the cotton, rayon and fiber finishes, these materials are not bio-degradable. They can also gnaw holes in silk, rayon and rubber goods. It has since been replaced by synthetic fibers like rayon and nylon. DuPont originally introduced the fabric as a type of rayon.