I have a few stray lashes that are very stubborn and have a mind of their own. I love the fact you can use this as a comb or curler on your lashes. I apply a small amount of mascara, use curler as a comb and hold it against my lashes (pushing them up) for about 10 seconds. I use medium setting and t it does get really warm, but not hot enough to burn - I have not been brave enough to try hot, no need to go hotter when medium works fine for me. Once I am done, I apply another thin coat of mascara to hold them in place. I found that my lashes don't bother me all day and they keep their shape. Only thing that I would like to see better, is that it doesn't hold a charge. I don't do my makeup on a daily basis, so a couple days can go by, and it will need to recharge - I also use it on medium and for a good length of time on each use - so that could drain battery faster too. You cannot use it while it is charging. But overall, I have been fighting with manual lash curlers, trying different types....but this one has worked the best!