To avoid excessive heat and prevent fading of your bed sheets, keep them away from direct sunlight. If you're using a dryer, use the lowest heat setting possible and hang the sheets to dry if possible. Wash your sheets in cold or lukewarm water, and never use strong detergents. Whenever you're ironing, use a low setting and keep the iron moving to prevent scorching. Lastly, make sure to flip your sheets and pillowcases periodically to even out wear and tear.