bjo.bmj.com Review:

I love this shampoo! I love that you really only need to use a drop the size of a dime, and it creates great lather, with that in mind a bottle lasts me about 6 months or so. In that respect, the price isn't so bad.

I'm thinking there is some validity to this product. Although, I do workout, and do a lot of butt exercises. However, I can say the volume and firmness has enhanced since using this.