Question about Revlon One-Step Volumiser

Hi, I have had the Revlon One-Step Volumiser for a year now and I am super happy with it. I have a lot of curly hair. However, my hair is not frizzy. It is very easy to blow-dry with the brush. You can definitely get your hair straight. How much time you need depends on the structure of your hair. I have medium-length hair and I'm through after 20 minutes.