Definition: Rayon is a soft and comfortable fabric that absorbs well and has few static and pilling problems. Rayon can have problems with shrinking. There are both dry clean only and washable rayon fabrics on the market today. The only difference in these rayon fabrics is their finishing stages. Watch care labels closely to know what type your clothing is. Although rayon has many characteristics that make it a great fabric, it can also be easily ruined by disregarding care labels.