A. You can unshrink merino wool by soaking it in lukewarm water with added hair conditioner or baby shampoo for 15 to 30 minutes. After that, gently squeeze out the excess water, then lay the garment on a towel, and carefully stretch it in all directions back to its original shape and size. You’ll need to wash the sweater in cold water to remove the hair conditioner or baby shampoo and allow it to dry.
