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Silica — Frequently Asked Questions

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

Frequently Asked Questions

What is the best form of silica to take?

Choline-stabilized orthosilicic acid (ch-OSA, marketed as BioSil) is the best-studied and most bioavailable form. It provides silicon in a directly absorbable form. Horsetail extract is a traditional alternative but has variable silicon content and lower bioavailability. Colloidal silica (large particle) is poorly absorbed and not recommended.

How long does silica take to work for hair and nails?

The landmark Barel et al. study showed significant improvements in hair brittleness and nail hardness after 20 weeks (about 5 months) of daily ch-OSA supplementation. This timeframe aligns with hair and nail growth cycles. Expect to take silica consistently for at least 3-6 months before judging results.

Is silica the same as silicon?

Not exactly. Silicon (Si) is the element, while silica (SiO2, silicon dioxide) is the most common compound of silicon found in nature. In supplement form, orthosilicic acid [Si(OH)4] is the bioavailable species that the body can actually absorb and use. When people say "silica supplement," they typically mean a product providing bioavailable silicon.

Full Silica Guide

References

  1. (). Effect of oral intake of choline-stabilized orthosilicic acid on skin, nails and hair in women with photodamaged skin. Archives of Dermatological Research. DOI
  2. (). Dietary silicon intake is positively associated with bone mineral density in men and premenopausal women of the Framingham Offspring cohort. Journal of Bone and Mineral Research. DOI
  3. (). Orthosilicic acid stimulates collagen type 1 synthesis and osteoblastic differentiation in human osteoblast-like cells in vitro. Bone. DOI