Not for fine, naturally blonde hair
I am giving it a mid-range review because it didn't work well for me, but may be great for someone else. I have very fine, naturally light-medium blonde hair. This bar made it look very dull and like it hadn't been washed in days.  I've used bar shampoo for years and know how to use it properly.  The first time I used it, I thought that maybe I didn't rinse my hair good enough. So I tried it a few more times.  It took the shine and life right out of my hair.
Rating: 3 stars