The accumulation of lint on Velcro is not only an eyesore, it can make the adhesive action of the Velcro less effective. If you've tried to remove lint from Velcro with soap and water, you probably didn't have much luck in getting the Velcro clean. There is a quick and effective way to remove all of this built-up lint, however, with items you probably already have on hand.
Cleaning the Soft "Loop" Side
Cut a piece of duct tape to the same size as the Velcro strip you want to clean.
Place the duct tape on top of the soft side of the Velcro and press it gently so that the lint, hair and other debris will transfer to the tape.
Pull the duct tape from the Velcro quickly to remove the debris. Repeat the process if necessary.
Cleaning the Coarse "Hook" Side
Run a fine-tooth comb through the Velcro to loosen debris. If possible, clean the item under water to minimize damage to the Velcro fibers.
Pull out the debris with your fingers or a pair of tweezers.
Run a toothpick or a sewing needle through the Velcro to pick up any remaining pieces of hair, string and lint that are stuck between the course fibers. Run the toothpick or needle along the very bottom of the Velcro in the same direction as the fibers.