How To Wash Merino Wool Socks. Soak the clothing for 10 minutes. Use mild soap, no bleach or fabric softener (bleach destroys the merino wool fibers, and fabric softener coats those fibers—reducing their ability to naturally manage moisture and regulate body temperature).
Turn your merino wool socks inside out to prevent damage. If not, tumble dry on a low, delicate setting. Well, kosha’s technical socks are made of 90% merino wool and 10% elastane.
It won’t damage the fibers and you can actually use it to wash dishes as well.
Fill up a large pot or sink with warm water and a few drops of soap/detergent. As much as possible, keep your wool garments away from heat sources — that means don’t use hot or warm water when you wash and rinse, and don’t leave your garment out to dry near a vent or radiator. How to hand wash wool socks. The cool thing about merino is even if it shrinks in the dryer, it expands back to form your feet.