I really like this shampoo. It claims its a "volumizing" shampoo, and I didn't find it added any volume, but that's not why I bought it in the first place. I bought it for the strong rosemary smell and the excellent ingredients.
It's sulfate and silicone free and has a lot of potentially invigorating oils in it. There are oils such as lavender, rosemary, and some citrus oils in it which I think could really get the circulation going on your scalp, which could aid in hair growth (just my theory).
I thought this shampoo would be a little drying but it is the opposite! Instead of having water as the first ingredient, they put aloe juice in it instead! And because of that my scalp feels really nice and not too dry, and my hair is extra soft after using this. I think this could work well for not only dry hair-ed people like myself, but for people with oily hair too as it cleanses nicely if you shampoo your hair twice (which I do on an oily day.)
I use this shampoo on days my hair needs an extra clean, as I only wash it once every 4 days or so, or on the days I want my scalp to get some extra care too. I would recommend this to someone looking for some potential hair growth, a nice gentle cleanser, and something to soften there hair.