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Moumoujus

ALUMINUM BUTOXIDE.

Questionable CAS 2269-22-9 / LIGHT STABILIZER

Aluminum Butoxide is a rare aluminum alkoxide primarily utilized as a formulation stabilizer or chemical precursor in skincare. It aids in maintaining product integrity and can offer mild astringent effects upon hydrolysis.

Summary

stabilizing

Science

Mechanism of Action

This ingredient functions chemically as a structural stabilizer within formulas, supporting the integrity of other ingredients. Upon hydrolysis, it can provide a mild astringent effect by contracting skin tissue.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

It is typically used at very low concentrations (<0.1%) as a technical stabilizer, not a primary active, making overuse (dusting) in formulations unlikely.

The Formula

Formulation

Solubility
Oil
Optimal pH 6 – 8
0 7 14

Stability

Highly sensitive to moisture, hydrolyzing rapidly in water to form aluminum hydroxide and n-butanol. Best integrated into anhydrous systems or oil phases for stability.

Conflicts

  • water
  • strong acids
  • strong oxidizing agents

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Moderate

The European Commission flags it for potential respiratory sensitization as an asthmagen in inhalable products. Skin contact may induce irritation due to alcohol byproducts.

Your Skin

Skin Compatibility

Yes Normal
No Dry
Yes Oily
No Sensitive
Irritancy Moderate
Comedogenicity Low

Our Assessment

Verdict

Questionable

Primarily a chemical stabilizer, this ingredient lacks direct clinical evidence for skin benefits and poses moderate irritancy risks, especially for sensitive skin types.

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