The Library · Vol. 01Entry No. 44· Chapter 06

Horsetail Extract

Equisetum arvense

An ancient plant dating back to prehistoric times, Horsetail is one of the richest natural sources of silica. Used traditionally for strengthening hair, nails, and connective tissue.

1
Active compounds
0
In our products
2
Clinical citations
06
Glow & Skin
Horsetail Extract (Equisetum arvense) — botanical watercolor illustration

Equisetum arvenseBotanical illustration

§ 1The molecules

Active compounds.

No.01

Silica

Silicon Dioxide

Why this matters

  • 01Essential mineral for hair and nail strength*
  • 02Supports collagen formation in skin*
  • 03Promotes healthy connective tissue*

*These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.

§ 2Receipts

What the research shows.

Double-blind, placebo-controlled RCT of 22 women with self-perceived thinning hair. Oral Equisetum arvense (horsetail) extract containing organic silicon for 90 days significantly increased hair tensile strength and thickness versus placebo, consistent with silicon's role in keratin cross-linking and collagen synthesis in hair and nails.Araujo et al., Anais Brasileiros de Dermatologia, 2016
Open-label clinical study evaluating choline-stabilized orthosilicic acid (derived from horsetail) at 6-12 mg silicon/day for 20 weeks in 50 women with thin hair. Supplementation significantly improved hair morphology (elasticity, break load, and tensile strength) versus baseline, supporting dietary silicon's contribution to keratin-based tissue integrity.Wickett et al., Archives of Dermatological Research, 2007
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