As with anything, taking proper care of your sheets is important!
Machine wash cold with like fabrics on gentle or delicate setting, line dry or tumble dry low.
Use a mild detergent. Avoid the use of bleach, fabric softener's or other harsh chemicals.
Some pilling is normal with natural fibers. To prevent excess pilling,
avoid fabric softeners, dryer balls and friction with other rough
fabrics.
Bamboo sheets can shrink if exposed to excessive heating cycles during washing routines.
A natural way to help remove stains is to mix one part Vinegar for every four parts of water. Soak stained areas with the mixture, and let sit for a few minutes. This approach handles a diverse number of stains. Wash as usual, but, unless the stain is a resilient oil, wash on cold to ensure you don't end up setting the stain.