Rayon and viscose are regenerated cellulosic fibers with excellent drape, but many versions lose strength when wet. Construction and finish can also affect shrinking, stretching and whether an item is washable at all.
If the label permits laundering, favor careful wet handling and avoid twisting or aggressive wringing. If it specifies professional cleaning, do not substitute a generic home-wash recipe.
The fiber profile explains common risks. The sewn-in care instructions for your actual garment override any generic fiber-level guidance.
Care considerations
care label
Check the care label before wet cleaning; some rayon or viscose items specify dry cleaning.
UGA Extension notes that dry cleaning is recommended in some cases.
Watch for: Finishes, dyes and construction can make superficially similar rayon garments behave differently.
wash
If the item is labeled washable, use a short or gentle process and handle it carefully while wet.
Reduced wet strength is a key reason to avoid rough handling.
Watch for: Rayon can lose strength when wet and may shrink or stretch.
dry
Avoid twisting or aggressive wringing; support the item as needed while it dries according to the label.
Careful wet handling reduces avoidable distortion.
Watch for: Wet rayon can distort under rough handling or its own weight.
bleach
Do not use chlorine bleach unless the garment label and product directions specifically allow it.
Fiber finishes can change chemical sensitivity.
Watch for: Some treated rayon fabrics can yellow or weaken with chlorine bleach.