If you walk down a supplement aisle, scroll past a few ads on your phone, or sit in any “waiting room”, you will likely see a familiar pitch for your hair. A glossy bottle promising fuller, thicker, and faster-growing hair in a few months. Hair supplements make up a multi-billion-dollar global industry, and brands like Nutrafol, Hers, Votesse, and Alodia have become household names in their respective corners of the market. But the question that often gets lost in the noise is “Does this supplement work for my hair specifically?” 

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