Viscose is a kind of fabric thread made from plant pulp that helps clothes feel silky, cottony, or linen-like and be comfy to wear.
Viscose is rayon, a semi-synthetic fiber made from wood pulp and regenerated cellulose. It can be made to feel like silk, cotton, or linen, and is used for shirts, dresses, scarves, and other textiles.
Viscose was invented to look and feel like silk but cost less.
It can be soft and smooth like silk, cool and absorbent like cotton, or drapey like linen. It also takes dye very well, so clothes can be bright and colorful.
High-wet-modulus (HWM) rayon stays stronger when it is wet, and it can usually be washed more easily.
Cellulose acetate is a related material that is a cellulose ester and behaves differently from viscose. It can react to heat and often needs gentler washing, so clothes may have separate care labels.
Carbon disulfide is a chemical used in making viscose that can be harmful if breathed or touched. Safer machines, better filters, and rules can help reduce the risks.