If you have a natural fibre sweater, you've probably noticed it occasionally sheds or pills. To prevent this from happening, try freezing it.
Photo by looseends
WhoWhatWear recommends sticking the sweater in a Ziploc bag, then keeping it in the freezer overnight. This helps lock in the fibres, and you only need to do it once for ongoing, shed-free wear.
I was sceptical, but I gave it a shot, and it worked for me. I often wear sweaters over a blouse or dress, and when I take off the sweater, my blouse or dress is covered in hair. After freezing a sweater overnight, I gave it a test run, and the shedding had almost completely stopped.
Your own mileage may vary, but if you have trouble with sweaters that pill or shed, it's worth a try. Check out the full post at the link below.
How to Stop Sweater Shedding [WhoWhatWear]