Hair growth shampoos sell fast—until customers realize “growth” can mean five different things and your bottle can’t promise all of them at once. One buyer wants less shedding. Another wants thicker-looking roots. Another is battling a greasy, itchy scalp that makes hair look limp. If your product brief doesn’t separate those needs, your reviews will do it for you. A hair growth shampoo that performs in the market usually isn’t a miracle potion. It’s a well-positioned, comfortable shampoo that improves