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Hydroxocobalamin is a powerful, long-acting form of vitamin B12 that plays a critical role in energy production, red blood cell formation, and nervous system function

Over time, those same signals made it popular in cosmetic formulas meant for photoaged skin, uneven texture, and post-procedure recovery

Using it in people is illegal and carries real risk because the contents are unverified

The resulting supernatants were vacuum-dried at 37 C, resuspended in 100 L of 0.1% FA, and filtered with 0.2 m RC syringe filter before injection

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