This will soften the sweater fibers, making it possible to reshape it. Pull and stretch the sweater while in the shampoo solution. Place the sweater flat on a dry towel or on a sweater rack to dry. Shampoo makes an excellent all-purpose stain remover.
Shampoos contain grease cutters and ingredients to lift grime and dirt away.
It's also great to use if clothing gets stained while traveling. Most hotels put small bottles of shampoos in the rooms. Simply rub the shampoo into the stain and wash as usual. Add a teaspoon of baby shampoo to a quart of water and water seedlings. This solution will soften the soil and make it easy for seedlings to push through.