A little bit of love will have keep your vacuum working at its best
A build up of hair can cause your vacuum to not perform at it's best. The more that get wrapped around means the less that gets picked up. Maintaining the roller takes a few minutes a week or month (depending on how often you vacuum)
Scissors and tweezers are all you need (you can use your hands to pull but tweezers or tongs keep your fingers from getting roughed up). Cut into the hair build-up along the edge of the roller and then pull with tweezers. Repeat the cutting to make the pulling easier.
Now the brushes on the roller can do their job and you have just lengthened the life of your vacuum as the motor isn't working overtime to keep that rolling moving at the speed it needs to.