Redken never used 4.2 oz Flash drying blow dry primer frizz shine lightweight How to use? Well, ladies, do you know there’s a many ways to use it something right? I looked online wanted to research the product, and I blew my hair out.. I didn’t use before blowing my hair I use it the next day after my hair was blown out and it kind of gave it a little volume and it made it look smoother, so try it that way 😊