Good Cosmetic Ingredient SCCS/CIR Reviewed

Horsetail Plant Extract

INCI: EQUISETUM ARVENSE EXTRACT

CAS Number
71011-23-9
Function
Antimicrobial, antioxidant, hair conditioning, moisturising, skin conditioning, soothing, tonic
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes CIR reviewed (2021) โ€” safe as used in cosmetics

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
moderate
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Safety Opinions

Official safety assessments from the Scientific Committee on Consumer Safety (SCCS) and Cosmetic Ingredient Review (CIR).

cir
Verdict: safe

ved ingredients as used in cosmetic formulations. The Panel concluded that these ingredients are safe in cosmetics in the present practices of use and concentration. Nonspeci๏ฌc ulcerative dermatitis (noted as hair loss) was observed in an oral dosing study in which Sprague-Dawley rats were fed 4% Equ

Expert Verdict

Contains thiaminase (destroys thiamine) โ€” relevant for oral but not topical use. High silica content is beneficial but verify sourcing as wild-harvested material may contain pesticide residues or heavy metal contamination from soil.

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Concern Level: Low

Regulatory Flags

plant-extract

Frequently Asked Questions

Is Horsetail Plant Extract safe in cosmetics?

Contains thiaminase (destroys thiamine) โ€” relevant for oral but not topical use. High silica content is beneficial but verify sourcing as wild-harvested material may contain pesticide residues or heavy metal contamination from soil. The EU classifies Horsetail Plant Extract as "permitted". Safety rating: GOOD. This ingredient has been reviewed by cir.

Is Horsetail Plant Extract allowed in the EU?

Horsetail Plant Extract EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Horsetail Plant Extract do in cosmetics?

Horsetail Plant Extract functions as: Antimicrobial, antioxidant, hair conditioning, moisturising, skin conditioning, soothing, tonic. It is classified as a cosmetic ingredient in our database. CAS number: 71011-23-9.

What is the Margin of Safety for Horsetail Plant Extract?

adequate The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

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