Rayon has a low wet strength. Thus the fabric may shrink or stretch when wet. Dry cleaning is recommended. When hand washing, do not wring, use towel to take out moisture and dry flat.
Some dyes used on rayon migrate to the surface, when moisture contacts them, they form a "ring" which are difficult to remove. Thus it makes sense to protect the garment from moisture.
Also when pressing, avoid spitting by steam irons. Press on wrong side or use a press cloth to protect shine or iron imprints.
