It grows back. And I should know. My wife and both have hair fetishes. We were blessed with four daughters that have incredibly dense hair, very straight, blindingly shiny and so silky it gives you goose bumps. And my wife and brush the hell out of all that. Don't use commercial shampoo or conditioner either. And being nudist out here in nowhere usa makes hair play very arousing. She said one day they'll, our girls, be gone you know! Long story short that day we shaved our girls heads and when their hair gets back to 2 feet long we shave again. They love it, go figure. And we never how incredibly arousing it is cutting all that thick silky hair off. And these girls have the fastest growing hair, close to an inch a month. What with the scalp massages, healthly diet and love we show and share, well the accumulative all in one ponytail has grown to over a foot across. A when you lay down a have that bad boy drug up and down your body well that's heaven right here on earth. haloluya and pass the hair brush