For thick, massive hair... I would say it falls a little short of massive. I have fine hair, and this does not make it at all massive. That said, it also does not weigh it down. This is wonderful. I tend to use it as my everyday shampoo, but I find that it can be a little too moisturizing after awhile. I have very healthy and undamaged hair, so I do have to switch away from this on on occasion to give my hair a little vacation. It smells great, though. Like strawberries. The price is very reasonable. Also, I find no real difference between the bottles at Shoppers Drug Mart and the bottles I get from the salon. I feel like this product would be able to deliver amazing results to girls with more coarse hair than mine... Or girls with damaged hair.