Ravelry: Cascade Yarns ® 128 Superwash®
Nov 11, 2020·• Use the right soap. Superwash yarn is safe for the washing machine, but not necessarily for all of the chemicals found in regular laundry detergent. Many laundry detergents contain enzymes to attack protein based stains. Wool is a protein based fiber, which means the enzymes in your detergent can harm the wool.