Give your scalp a spa day, every day, with our award-winning, clinically tested Scalp Serum. With ingredients like caffeine, peppermint and rosemary oil, this water-based formula has been shown to improve the look of hair fullness and density in as little as 6 weeks*. The best part - you can use it every day without any residue. So go ahead, show your scalp the TLC it deserves—your hair will thank you, too. *box still sealed. I never opened it. Accidentally ordered 3 month supply so I have way too much of this stuff. I don’t want it so figured I’d try to get rid of it for cheaper to someone who actually uses it. Size: 30ml (1-month supply)