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Spermidine for Hair Growth: What the RCT Data Shows for Thinning Hair After 40

2026-08-05

A randomized controlled trial found spermidine increased growth-phase hair follicles by ~52%. Here’s what the data means for thinning hair after 40.

A randomized controlled trial found spermidine increased growth-phase hair follicles by ~52%. Here’s what the data means for thinning hair after 40.

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