Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Silicon, specifically in the form of orthosilicic acid, has garnered scientific interest for its potential role in supporting hair health. Silicon is a trace element present in human tissues, including skin, hair, and nails. Research has suggested that silicon may be important for the synthesis and stabilization of connective tissue components, such as collagen and glycosaminoglycans, which are fundamental to the structural integrity of the skin and hair follicles. Several clinical studies have explored the effects of silicon supplementation on hair. For example, a randomized, placebo-controlled study published in 2007 (Wickett et al., Archives of Dermatological Research) found that supplementation with choline-stabilized orthosilicic acid improved hair tensile strength and thickness in women with fine hair. The proposed mechanism is that silicon may enhance the formation of collagen and keratin, the main structural proteins in hair. While these findings are promising, the overall body of evidence remains limited, with only a few well-designed human studies available and some variability in results depending on the formulation and bioavailability of silicon used. Therefore, while there is emerging scientific support, more robust and larger-scale clinical trials are needed to fully substantiate the benefits of silicon supplementation for hair health.

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