I really love Pureology brand products. They always work for me, even if the price is steep I am willing to pay the price for quality. Once I saw that Pureology Nano Works Shampoo is 100% vegan I was sold on trying this product. Effectiveness This stuff cleans really gently but it leaves my hair feeling amazing like a salon quality wash. The lather it produces is nice and rich without stripping my hair, and it is also very impressive for a shampoo that has no sulfates (Since sulfates are what produces that thick rich lather in most shampoos). When I was using Pureology Nano Works Shampoo I noticed after a few washes that my hair started to feel healthier, have more of that sleek shine, and was more manageable.It made a huge difference in my hair. It also did not wash out my hair, and it extended the time between dye jobs. Scent Pureology Nano Works Shampoo smells absolutely heavenly, but it is a little strong at first. The smell fades through out the day in to a nice light almost "romantic" type of scent.