Washing fine merino wool clothing by hand is always recommended.here are special wool washing fluids that are available that utilize cold water, so if you use one of these type products, be sure to read the label first. Submerge your garment in the water and let it soak for just three to five minutes, followed by rinsing in warm water.
I have been washing mine with my regular whites (I have mostly cream colored Medima tops and bottoms) and they have held up fine. I only dry them for 20 minutes or so to get some of the dryer sheet action on them to hopefully reduce the static. I then hang them that they might finish drying. Red Ram did not hold up too well.