So far, so clean!
"I’ve had this for about a month and I’ve used it five times. I only wash my hair every three days. (Thank you, MoroccanOil Dry Shampoo!) I haven’t used it every time I’ve shampooed but when I do, my scalp feels very clean and my hair is shiny and the roots stay cleaner, longer. Of note, I use more than I expected I would per wash. You DO have to apply it directly to the scalp so part your hair in sections. The dropper pulls about 3/4 inch of product and I use the whole thing on each parted section. I’m going to keep using it. Good luck!"