No-GoZones
Yarn is magical, but it has its kryptonite. To avoid a fuzzy disaster, please avoid these:
NO WASHING MACHINES OR DRYERS!
Machines are too rough, and dryers are way too hot! High heat is scary for handmade yarn; it can melt the fibers, shrink your friend, or make them fuzzy and misshapen.
Keep it Gentle
No harsh chemicals (bleach is a big no-no) and definitely no ironing. They are perfect just the way they are.