Know Thy Enemy: Friction
Any fabric can pill—aka form patches of fuzz balls—as the fibres stretch and break as a result of friction. Clothes rub against themselves while you’re wearing them, and against other fabrics during the washing and drying process.
Once you recognize the enemy, you can start fighting the enemy.
Know Thy Friend: Fabric Conditioner
Lenor Fabric Conditioner smoothes fabric fibres to limit the friction garments experience in the washing machine and dryer. Less friction means less bobbling.
Some bonus tips: Wash clothes inside-out. Avoid powder detergents. Follow directions and read fabric care labels.
Know Thy Fabrics: Buying Tips
Synthetic fabrics—especially blends mixing multiple types of fibres—are more likely to result in bobbling than are pure, natural fabrics, like wool and cotton.
Also, the looser the weave, the more prone the fabric will be to bobbling, which is why you hear about "jumper bobbling" instead of "jeans bobbling."
Save the Shave
If you’re looking for solutions to salvage an already-pilled jumper, you can use a jumper shaver or jumper stone, but these “hacks” only treat the symptom and not the cause.
Lenor Fabric Conditioner helps to prevent the damage in the first place.
Next, learn more about why your fabrics' colours fade
Five Quick Tips to Help Prevent Clothes from Fading