What are steam rollers?

What are steam rollers, how do they work, are they damaging like a curling iron, will they make heat styled hair frizz, and are they the same thing as hot curlers?

They are rollers that you put on a steamer. Do a search of Caruso?

They don't damage but they tend to frizz coarse hair unless you use end papers on the rollers.

I used to like them. I stopped using them when my hair got in that in-between phase which means it is too long to wear curly curly and too short to have a white girl flip with curls.

Can anyone tell me if you use these rollers on dry hair or wet hair?

You use them on dry hair.

I've never heard of anyone using them on wet hair. I just used mine last night. My hair came out great. I have thick 4B hair, but I also have a fairly new relaxer so I think that helped. I used it once when I was about 8 weeks post and it did not come out too great.. thick root sydrom!

Once the roller is hot, I shake the excess water off then roll from the very tip. Roll the whole head up, leave for about 15 min, remove and beatiful soft boncy curls. I think it's actually healthy for the hair. It's not direct heat is steam.

Do you still need to use a setting lotion or will a leave-in be fine. I am thinking about purchasing a set.

When I'm using my Caruso set the most I'll do is moisturise before. If you use a setting lotion your hair will be wet and take much longer to dry so I don't think that's advisable.