Oh my poor hair has seen it's fair share of products. And every few weeks my hair gets to a point where my shampoo just will not lather because of all the junk I have coated on it. The Redken Hair Cleansing Shampoo is my savior. It takes my hair from an almost slimy feel to soft, natural hair. I do have to say this is not for someone who has color treated hair. Just like it pulls the styling product from the hair, it will also pull the color. I do a lot of fun colors in my hair (like pink) and when I am about to change colors, I use this to strip out as much of the color as I can so that I do not have to bleach for as long. Extension hair is another great application for this product. If you are getting dangling issues, it is generally from to much product build up. Use this, then a normal conditioner and you will have your extensions feeling nearly brand new. I work for an extension company and this is what we recommend to troubleshoot most extension issues. Effectiveness Will take you hair from dirty to squeaky clean! Scent Nothing amazing, but not overpowering and does not linger.