Taken is average or sweater pilling はな. Hairball catchers also and not beautiful, poor would 傷めて the sweater. But I give up. Let’s deal with it.
If you take a sweater Pilling, please try this method. Mountain type sponges for kitchen use is required.
As for what to do,
Is good only lightly rub the sweaters in soft surface mount type sponges for kitchen use. You can not damage the sweater now, take a hairball.