I was really intrigued by the term "water treatment." First of all, the bottle shape made it difficult to dispense, so I ended up pouring it onto my scalp, which gave me a slightly warm feeling. (It's meant to be applied to the hair.) After applying it, my hair felt more moisturized than smooth. The scent was like watermelon, which made bath time very relaxing. After rinsing, my hair felt soft and smooth. The lovely scent lingered even after I got out of the bath. I usually use a leave-in treatment before drying my hair, but while I was using this, I didn't use my existing treatment. It just left my hair feeling moisturized? I'm not sure how it affected my hair the next day... P.S. As someone else mentioned, after applying this and using the treatment, my hair became incredibly smooth!! It wasn't in the instructions, so I'm not sure if I was using it correctly, but it felt incredibly comfortable to use!! P.S. After that, I bleached my hair and colored it again, which caused more damage than before, so I tried various milks and oils recommended by the salon, but this is the one I highly recommend!! I couldn't find anything that I liked, so I was lost... But then I had one use left of this product that I had used before, so I used it for the first time in a while... and it made my hair incredibly smooth!! This time, I had forgotten how to use it, so after shampooing, I used only this product and rinsed it off! I applied the milk I always use and used a hair dryer. Then, my dry, frizzy hair became smooth! And when I looked in the mirror, the damage was no longer noticeable!! I've tried a lot of different products, but this is the best one I've used recently! I ran out today, so I'll buy some more! Lol