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Peptide powders and vials sold by research chemical vendors are sold under a "for research purposes only" designation - not as consumer supplements, not with consumer return policies, not with manufacturing accountability under GMP standards, and not with third-party testing documentation comparable to what a regulated supplement brand provides

PLoS One (2010) 5(11):e15042

Journal of Cellular Physiology, 234(2), 11111129

Steroid injections for hair loss arent recommended for those who have lost hair due to aging, but may be appropriate if you suffer from autoimmune alopecia

Whether that prohibition will be lifted depends on the outcome of the July 2026 advisory meeting