Pea shoot (Pisum sativum) extract has been investigated for its potential benefits in supporting hair health, particularly in relation to hair growth and reducing hair loss. The scientific basis primarily stems from a few in vitro, ex vivo, and small-scale human studies. Notably, one clinical study published in 2017 evaluated a pea sprout extract (AnaGain™) and found that daily oral supplementation with 100 mg of pea sprout extract led to a significant reduction in hair loss among women with self-perceived hair thinning over a 2-month period. The proposed mechanism is linked to the upregulation of specific genes involved in hair growth (FGF7 and noggin), which are believed to prolong the anagen (growth) phase of hair follicles.

While these findings are promising, the evidence base is limited, with most studies being sponsored by extract manufacturers and involving small participant numbers. There is a lack of large, independent, peer-reviewed clinical trials. Traditional use of pea shoots for hair health is not well-documented in herbal medicine literature, suggesting the current use is primarily driven by recent scientific investigations rather than historical precedent. Overall, the evidence supports a moderate rating (3/5), reflecting initial positive results but also the need for further, higher-quality studies to confirm efficacy and safety.