How do you soften a stiff wool hat?

To soften a stiff wool hat, you can gently wash it in lukewarm water with a mild shampoo or conditioner. After washing, rinse thoroughly and reshape the hat while it’s still damp. Allow it to air dry flat, avoiding direct sunlight or heat sources, which can cause the fibers to stiffen again. If needed, you can also steam the hat lightly to help relax the fibers further.