Magnesium Peroxide

INCI: MAGNESIUM PEROXIDE

CAS Number
1335-26-8
Function
Oxidising agent, oral care agent (tooth whitening)
Safety Rating
POOR

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted โ€” used primarily in oral care/tooth whitening products; no specific CFR cosmetic prohibition

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
low
Sensitization
high

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Strong oxidiser that may intensify fire; causes skin irritation, serious eye irritation, and respiratory irritation; not recommended for leave-on dermal products; requires strict PPE handling and storage away from combustibles

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Concern Level: High

Frequently Asked Questions

Is Magnesium Peroxide safe in cosmetics?

Strong oxidiser that may intensify fire; causes skin irritation, serious eye irritation, and respiratory irritation; not recommended for leave-on dermal products; requires strict PPE handling and storage away from combustibles The EU classifies Magnesium Peroxide as "permitted". Safety rating: POOR.

Is Magnesium Peroxide allowed in the EU?

Magnesium Peroxide EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Magnesium Peroxide do in cosmetics?

Magnesium Peroxide functions as: Oxidising agent, oral care agent (tooth whitening). It is classified as a cosmetic ingredient in our database. CAS number: 1335-26-8.

What is the Margin of Safety for Magnesium Peroxide?

not established 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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