I had this done about 3 years ago and I loved it!!! My hair was slightly wavy but very frizzy at the ends. I color and highlight so I went with the Bio-Ionic system which is made specifically for treated hair. My hair ended up looking fantastic and seemed to be in better condition after the procedure. I had a friend who had virgin hair and she went with the RuskStr8 and was thrilled. As soon as my hair grows out I will definitely get it done again. I went from spending over an hour drying and straightening my hair down to about 10 minutes tops and it looked better!!