Detergents and Washing Handknits
My new occupation is requiring me to learn a good deal about laundry soaps and detergents. I'm sure you may be skeptical, but it's actually quite fascinating. To make a long story short, I'm going to argue that you should never, ever put woolens in with the regular wash, no matter how 'superwash' your yarn might be. (This has nothing to do with the action of the washing machine, only the detergent itself.) Here's why: laundry detergent isn't just soap. Besides the cleansing agents, I've learned that detergents contain stuff called 'binders', and sometimes contain enzymes. Binders play several roles in the laundry process. They keep the cleansing agents from clogging your washing machine and building up on your clothes, but they also help keep the water soft and they raise the pH. The cleansers work best in soft, alkaline water, with a pH of about 9. Some enzymes, although they are not as popular in our detergents, may decompose proteins.