Drying a wool sweater in the dryer can be a bit of a gamble, even if you use the lowest heat setting. The agitation and friction from the dryer can still cause the wool fibers to break or felt, leading to a less-than-desirable texture. And, let's be honest, who wants a sweater that's lost its softness and drape?
On the other hand, air drying is a much safer bet. By laying your wool sweater flat on a towel or using a drying rack, you can help preserve the natural texture and shape of the garment. Plus, it's a great excuse to get some fresh air and enjoy the great outdoors (or at least, your backyard).
Can You Put Wool in the Dryer? (How to Avoid Wool Shrinkage) – Yarnhustler
But, if you're short on time or patience, there are some specialized dryer settings that can help minimize the risks. Some dryers come with a wool or delicate cycle, which uses lower temperatures and gentler agitation to help protect your favorite sweater. Just be sure to check the care label first, or you might end up with a shrunk or distorted garment.