This shampoo works very well. I didn't notice any changes to my hair thickness, but I am in my early twenties, so this isn't something I usually look for. The smell is very good, I'm not really sure how to describe it. It is refreshing and clean. I bought this in April and used it about 4-5 times a week and finally ran out in October. I'll most likely buy this again, simply because of how effective it is and how long it lasted me.
Really good shampoo
I like anything made by Jack Black. I just wish Birchbox would also sell the Conditioner. Great smell, nice texture.
I've used this for a few months now. I like the smell and the shampoo seems like a good shampoo.
I have not noticed any new hair growth. In my opinion, it's probably like most other products that claim to promote hair growth. They don't work. Who knows, you might get a few new hairs here and there, but it's never enough to make a difference. Especially, if that's the reason you are buying a product.
This stuff works great. It smells a little strange but that doesn't bother me. I will be purchasing the matching conditioner.