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See what a new study found in the What It Does section of the Protein Supplements Review

Journal of Applied Physiology, 116 (8), 9921000

178 Another controlled trial evaluated the effect of a supplement containing acetyl-L-carnitine, L-carnitine fumarate, and alpha-lipoic acid in 80 infertile men with increased sperm DNA fragmentation and oxidative stress

The derm shares that it's an affordable option that "includes multiple peptides targeting follicle health and scalp condition." She adds that it's "good for early thinning and maintenance." While you may know Neutrogena best for its skin care, the brand started creating hair formulas to target growth concerns late last year