Magnesium Ascorbylborate

INCI: MAGNESIUM ASCORBYLBORATE

CAS Number
Not listed in CosIng with a public CAS (CosIng REF No. 35083 exists but no CAS is published for this entry)
Function
Antioxidant, Humectant, Skin Conditioning
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status prohibited
๐Ÿ‡บ๐Ÿ‡ธ US Status prohibited
US Notes Not specifically listed as prohibited or restricted under 21 CFR 700; however, boron-containing compounds may face scrutiny and are not commonly used

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

The borate moiety (boric acid ester/salt) is classified as toxic to reproduction in the EU, which is the basis for the prohibition. Combines the antioxidant benefits of ascorbic acid (Vitamin C) with a borate ester structure; the borate component undermines its regulatory viability despite functional promise

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Concern Level: High

Frequently Asked Questions

Is Magnesium Ascorbylborate safe in cosmetics?

The borate moiety (boric acid ester/salt) is classified as toxic to reproduction in the EU, which is the basis for the prohibition. Combines the antioxidant benefits of ascorbic acid (Vitamin C) with a borate ester structure; the borate component undermines its regulatory viability despite functional promise The EU classifies Magnesium Ascorbylborate as "prohibited". Safety rating: MODERATE.

Is Magnesium Ascorbylborate allowed in the EU?

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

What does Magnesium Ascorbylborate do in cosmetics?

Magnesium Ascorbylborate functions as: Antioxidant, Humectant, Skin Conditioning. It is classified as a cosmetic ingredient in our database. CAS number: Not listed in CosIng with a public CAS (CosIng REF No. 35083 exists but no CAS is published for this entry).

What is the Margin of Safety for Magnesium Ascorbylborate?

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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