Hey, I manage a supplement store that sells this stuff. IDK about possibly an older formula before my time but theres nothing in it that would make your hair fall out unless you are maybe hyper sensitive to stimulants. And that particular one pictured is actually the more mild version, the Black Onyx version is stronger. I'm not claming to be an expert or a doctor, I'm just analyzing it from an ingredients perspective.

All it serves as is a thermogenic meant to give you energy and boost your metabolism, but it doesnt really work for weight loss unless you combine it with a proper diet and carb-cutting, then it would maybe help you capitalize on it, but it's not necessary. A lot of people just like it as a pre workout honestly, I enjoy pre workouts but not Hydoxycut, I prefer stuff with nitric oxide producers in them.

Edit: I think youre referring to when the original formula had ephedra in it, that stuff is banned now. The only thing the current formula has in it that the OG formula had is caffeine, everything else in it nowadays is pretty tame TBH, its why that one is actually pretty cheap compared to others.