High temperatures are bad for all fabrics.

 Bleach is better than chlorine.

Lipstick, make-up, nail polish: Rub gently with a cloth soaked in turpentine or alcohol.

Rayon

Rayon is a fiber made from natural sources such as wood and agricultural products that are regenerated as cellulose fibers.

Washing in the washing mashine

Do not allow the clothes to get very dirty before washing them.