This is the best hair product I have laid my hands on! I have straight, thick, hip length Asian hair. It could never hold a curl for more than 30 minutes without additional help from hairspray... But who wants stone hard hair anyway? The curls I create with this tool would last at least 2 days (I wash my hair every other day). The technique use to curl hair is simple once you get the hang of it. I actually learned from YouTube.com.
As far as straighten, it also does the job. Although my hair is straight, it does get a little poofy at towards the bottom. The seductress totally tames every strand and makes my hair have a wonderful shine.
I have not tried to use this product to wave my whole head, so I can't say much about that. I did, however, tried it on a few sections of my hair and it looked good. I just got lazy with it.
So overall, the Sultra Seductress deliver what I had hoped for, and it is worth the money (I've spent hundreds of dollars on below par but cheaper products that when added up equals to more than the amount of this multi-use product). I do always recommend using a heat protectant when using any kind of heating tool.
P.S.
I would like to add that I did not purchase this from Amazon, but at another beauty store. I'd just like to add my review in this product is not getting the attention it deserves. GOOD LUCK!!!