Each wash should contain two washes in order to have fully cleaned the scalp. The first time removes a lot of dirt and the second time removes whatever is left. As for the product, if you are not able to get it, just refer to the mask first and then you will believe in it as well. My hair is thin, damaged, and I won't say that the shampoo relieved me from split ends because that is not possible to happen anyway since shampoo offers cleanliness and maybe some hydration. In my hair, with double use twice a week (the less the better), from the first use it made it soft as silk, something I had never seen from a shampoo. Amazing smell, but I know that before I take a bath I will have tangled hair (because I usually have it up) and as soon as I apply this wonderful shampoo it will be like I straightened it in the bath, we are talking about something so wonderful. Then, after drying them as I have already mentioned in the mask review, I have frizzy hair but the next day they are clean. The truth is that my hair gets oily more easily lately (e.g. on the second day, but it can last for 3 days if I tie it up) because I used coconut/almond oils, etc. on my hair (big mistake), resulting in not 100% of the quantity of these heavy oils having left the scalp. I recommend it to you, but I am not sure if it is the best shampoo ever, so if you are obsessed like me with hair products, keep searching because I believe we can find the excellent product. If you are in a phase where you are searching and want to invest in healthy and quality hair, it is a very good suggestion/a good start.