You're supposed to use these on wet hair, allowing your hair to airdry so there's no heat involved. I used them twice before giving up on Curlformers for almost 4 years! I couldn't fault the curls they created, which were perfect, but I couldn't stand having to use them on wet hair (as mine can take hours to dry) and I didn't like having to drag my tangle-prone hair into the curlers. I also have a lot of hair on my head and even when it was short it would take hours to put these in as they need to be small sections to dry evenly. I was about to throw them out, but curiosity made me try the Curlformers on my wig and the results are just beautiful.
This is now the main way I style my wig. It takes little to no time to prep and the curls can last for a few days before I need to repeat the process. I only spray the ends of my wig with a little water and hook small sections into the Curlformers. I then leave the hair to airdry on my mannequin head overnight.
The pictures here are from the first time I tried them last week. The curls held up for most of the day before dropping into loose waves. I didn't use any product on the wig, only a little water, and these shots were taken at the end of the day. I'm definitely going to continue using Curlformers on my wig as it doesn't cause any damage to the hair and the results are so pretty.
Have you tried Curlformers?