March 2016 in “The Korean Society of Beauty and Art” MSG-based hair hardener improves hair thickness, strength, and wave retention after perms.
25 citations
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December 2005 in “Molecular Genetics and Metabolism” Taking riboflavin and eating less lysine can help some people with a specific genetic disorder avoid brain damage.
January 2026 in “Cirugía Plástica .” Topical glutamic acid may help hair regrow after burns, but more human testing is needed.
12 citations
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July 2021 in “Scientific Reports” Glutamic acid helps increase hair growth in mice.
22 citations
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October 2019 in “International Journal of Nanomedicine” The nanoparticles improved hair growth and enlarged hair bulbs.