Hair Tools Velcro Rollers are easy to use on wet or dry hair. Before using on wet hair, roughly dry with a towel or hairdryer, then section hair, wrap round rolllers & the velco will keep hair/roller in place. Hair net may be used if sleeping in them. When using on dry hair, spray hair with setting lotion, wind in rollers & allow to dry naturally or blast with a hairdryer to speed process up. There are 6 rollers in each pack. Available in a variety of sizes.