My good friend recently put out a short video review of doTerra's shampoo, and I gotta say, she nailed it! The product is...well, I don't want to spoil her review. Be sure to watch it and see for yourself!
If you want a wider review of doTerra's products I gotta admit, the best one I've read to date is at http://www.trustedoils.com/doterra-essential-oils-review-of-this-company-and-their-products/ That review covers a nice broad spectrum of the company and their products without getting SUPER specific. Good read, that.