I used these heat rollers for the first time today. Based on the instructions, the unit takes about 10 minutes to heat up. The unit has an On/Off switch and lights up. There is no indication of when the rollers are fully heated, so timing is up to you. Although rollers are not too hot to handle, the roller end that rests on the base of the heating element, gets hotter than the top end. The rollers are fairly lightweight, so only minor adjustments are needed when using the clips. After use, rollers need to be returned to the proper size hole-slot, so if you have any spacial difficulties, this will drive you crazy. Clips work okay and they do not leave a dent. Clips come in a plastic sleeve, so they are storable separate from the unit. I left the rollers in my hair for 10 minutes. The curl came out nicely, however, I use product in my hair (before and after) to help retain the curl, finished off with an anti-humidity hair spray. After careful consideration, I think I'm more impressed with how the unit looks, than how it actually works.
150 out of 165 shoppers thought this review was helpful.