Machine wash with cold water on a gentle cycle. Tumble dry on low heat.
As soon as a stain occurs, blot the area and absorb the liquid as best as possible. Wash the blanket immediately to prevent the stain from settling into the fibers.
Alpaca is just like hair and can get a little frizzy over time. To restore your blanket to its original glory, brush the blanket in the direction of the fibers with a soft bristled brush. Follow by ironing in the same direction.