Is Viscose (Rayon) Plastic-Free?
The honest chemistry, the performance trade-offs, and a straight verdict for founders deciding what their next line is actually made of.
Verdict: Plastic-free (with an asterisk)Viscose, also called rayon, is plastic-free with an asterisk. It is regenerated cellulose made from wood pulp, so the polymer is a plant cellulose rather than a petroleum plastic, and it biodegrades and sheds no microplastics. The asterisk is heavier than for lyocell: standard viscose uses an older carbon-disulfide process that is harsher on workers and the environment. Not a plastic, but not a clean natural fiber either.
What is Viscose (Rayon)?
Viscose is the original regenerated cellulose fiber and the most common form of rayon. Wood (or bamboo) pulp is chemically dissolved and re-formed into filament. Because the base polymer is cellulose, it is chemically plastic-free in the same family as cotton, but it is manufactured rather than grown into fiber.
- Fiber type
- Regenerated cellulose (semi-synthetic, plant)
- Source
- Wood pulp (often eucalyptus, beech, bamboo)
- Biodegradable
- Yes
- Sheds microplastics
- No (cellulosic, not plastic)
How is Viscose (Rayon) made?
Cellulose pulp is treated with caustic soda and carbon disulfide to form a soluble cellulose xanthate (the viscose solution), then extruded into an acid bath that regenerates the cellulose as fiber. The carbon-disulfide chemistry is the problem: it is toxic to workers and, in open-loop mills, to the surrounding environment. This is exactly the process lyocell was designed to replace.
How does Viscose (Rayon) perform?
Soft, drapey, breathable, and highly absorbent with a silky hand, which is why it is everywhere in dresses and linings. Its weaknesses: it loses significant strength when wet, wrinkles, shrinks, and is less durable than cotton or lyocell. It has no stretch on its own.
So, is Viscose (Rayon) plastic-free?
Plastic-free with an asterisk. The fiber is wood cellulose, not petroleum, so it is not plastic, it biodegrades, and it does not shed microplastics. But the asterisk is real: standard viscose is a manufactured fiber made with harsh carbon-disulfide chemistry. If you want the plastic-free cellulosic without the dirty process, choose lyocell (Tencel) or responsibly sourced modal instead.
Where you see it: Dresses, blouses, linings, and drapey fast-fashion wovens.
The OHZEHN-TEX™ take
Viscose is plastic-free at the fiber level, but the messy processing and weak wet strength are why we favor closed-loop lyocell for cellulosic needs. Where a program needs true athletic stretch and recovery on a plant-based platform, that is the job a castor-and-corn OHZEHN-TEX™ blend is engineered for, not viscose.
Frequently asked questions
Is viscose the same as rayon?
Viscose is a type of rayon, and in everyday use the terms are used interchangeably. Rayon is the umbrella term for regenerated cellulose fibers; viscose is the specific, most common process. Lyocell and modal are other rayon types made with cleaner or stronger chemistry.
Is viscose plastic?
No, viscose is regenerated wood cellulose, not a petroleum plastic. It biodegrades and does not shed microplastics. It is plastic-free with an asterisk because it is a manufactured fiber made with harsh chemistry, not a raw natural fiber.
Is viscose more sustainable than lyocell?
Generally no. Both are cellulose and both are plastic-free, but lyocell (Tencel) uses a closed-loop, non-toxic solvent that recovers most of itself, while standard viscose uses open-loop carbon-disulfide chemistry. For a cleaner cellulosic, choose lyocell.