I absolutely love these products. They really have changed my scalp, and my hair. I have always struggled so this is a big deal for me. however, I find myself a little stressed rather than relaxed using these products because the bottles are so incredibly small. I don't have long hair. It's about shoulder length and I don't have a lot of hair. I'd say it's about average. I do have a lot of curls though. I know this product is concentrated and I take that into account and I definitely use much less than my previous brand. But I am trying to ultimately get my scalp and hair clean. They say you get two months worth out of these bottles, but there is just no way. I find myself using less and less and less of it because I went through the first bottle in about three weeks and that's with only using five pumps of each. In using less, I'm not getting the same effect and so I don't think that's doing me any good. I was trying to justify spending the amount of money they charge for this shampoo and conditioner to purchase another bottle. I have spent way more on products for my hair, but they were in regular sized bottles. The other products they sell are outstanding as well and they seem to be in reasonably sized bottles. if anyone is reading this that has any power, PLEASE Make these shampoo and conditioners in bigger sizes that are economy type bottles where you can buy more by spending more upfront, but save some money AND have a product that lasts more than a few weeks. Thank you.