I have a RL Polo 100% cashmere cable knit sweater in a camel color that looks horrid with my complexion. I'm thinking of dyeing it a chocolate brown. Â The dyes that work best for animal fibers require hot water, but I don't know how hot I can go before this sweater turns into a pocket square. Â I do vaguely recall reading some website that recommended washing wool and cashmere sweaters in hot water with no agitation (to avoid 'fulling'), which makes me think it's possible. Â Anyone here have any tips?