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LAURYL ASPARTIC ACID.

Valuable CAS 31262-66-5,45259-30-1 / CLEANSING, SURFACTANT - CLEANSING

Lauryl Aspartic Acid is an amphiphilic compound derived from lauric acid and the amino acid aspartic acid. Primarily functioning as a mild surfactant, it facilitates effective cleansing and emulsification, while also offering the potential skin-supporting benefits associated with its aspartic acid component.

Summary

Cleansing Surfactant Hair Conditioning

Science

Mechanism of Action

Operating as a surfactant, typically in its salt form, Lauryl Aspartic Acid effectively reduces surface tension, enabling the harmonious mixing of oil and water. This action allows it to efficiently lift and remove dirt, excess oil, and impurities from both skin and hair. The parent compound, Aspartic Acid, contributes to skin hydration, serves as a fundamental building block for proteins like collagen and elastin, and may aid in preserving the skin barrier, promoting cell turnover, and supporting overall skin repair and anti-inflammatory responses.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Both
Optimal pH N/A
0 7 14

Stability

The parent L-Aspartic acid exhibits a pH range of 2.5-3.5 (at 4g/l, 20°C), with pKa values at 1.99, 3.87, and 9.87; manufacturers of L-Aspartic acid often target pH 7 for optimal production stability. As an amphiphilic surfactant, Lauryl Aspartic Acid effectively bridges oil and water phases. General amino acids, however, can be susceptible to degradation or incompatibility issues under conditions of high temperature, elevated humidity, or high pressure.

Conflicts

  • High temperature
  • High humidity
  • High pressure

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel thoroughly evaluated 115 amino acid alkyl amides, including Sodium Lauroyl Aspartate, concluding their safety in current cosmetic practices and concentrations, provided formulations are non-irritating. As with most surfactants, careful formulation is paramount to minimize potential irritancy. No specific SCCS or direct FDA cosmetic status was found for Lauryl Aspartic Acid; however, L-Aspartic acid (its parent compound) is listed under FDA 21 CFR 172.320 for food substances.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Lauryl Aspartic Acid is a valuable ingredient primarily as a gentle cleansing and emulsifying surfactant, with its amino acid derivative structure offering potential for enhanced skin compatibility and health benefits when formulated judiciously.

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