Garments made of rayon can be ironed, but not at temperatures above 375 degrees Fahrenheit. Laundry expert Mary Marlowe Leverette of About.com Home recommends that rayon garments be ironed inside out to help preserve the fabric and avoid scorching.
Rayon is a soft fabric that holds very little static and has few problems with pilling. However, rayon garments can easily shrink or scorch if the garment care instructions are not followed closely. When rayon shrinks, it can't be fixed. When it is scorched by an iron, the problem can sometimes be rectified. To remove iron scorch from a rayon garment, saturate the area with liquid laundry soap and wash it in cold water.