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AMMONIUM LAURETH-6 CARBOXYLATE.

Valuable CAS 41051-94-9 / CLEANSING, SURFACTANT - CLEANSING

A pH-adaptive 'crypto-anionic' surfactant that provides gentle yet effective cleansing by behaving as a non-ionic surfactant under acidic conditions and transitioning to anionic properties in alkaline environments. Its ethoxylated structure creates a larger molecular size that prevents deep skin penetration, resulting in significantly reduced irritation compared to traditional sulfate-based cleansers while maintaining strong foaming and detergency capabilities.

cleansing surfactant foaming

Science

Functions through a unique dual-phase mechanism where pH determines surfactant behavior - operating as a mild non-ionic cleanser in acidic formulations (pH <6) for maximum gentleness, while providing robust anionic cleansing action in alkaline conditions. The ethoxylated chain structure increases molecular size and hydrophilicity, creating a barrier effect that prevents penetration into skin layers and minimizes transepidermal water loss during cleansing.


Research

High confidence
Effective range 3–15%
Optimal

10%

Key findings

  1. 01 Clinical patch testing at 3.0% demonstrated significantly lower irritation potential versus Sodium Laureth Sulfate in human subjects
  2. 02 Formulations at 10.0-15.0% maintained high detergency and foam stability while reducing transepidermal water loss compared to traditional sulfate cleansers

Transparency

Not commonly dusted

Primary cleansing surfactant used at substantial concentrations (3-15%) with well-established safety profile - not typically subject to dusting practices


The Formula

Solubility
Water
Optimal pH 4.5 – 7
0 7 14

Stability

Exceptional stability in hard water and high-electrolyte environments across wide pH range, though surfactant characteristics shift from non-ionic to anionic as pH increases

Synergies

  • Co-surfactants for enhanced mildness
  • Conditioning agents in sulfate-free systems

Conflicts

  • Strong cationic polymers - risk of precipitation based on system charge balance
  • Highly alkaline reagents - compromises mildness profile

Safety

CIR Status
Safe as used
Max tested
15%
Pregnancy
Safe
Sensitization risk Low

Approved under CIR assessment for Alkyl Ether Carboxylic Acids and Their Salts with demonstrated lower irritation potential than conventional sulfates


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Valuable

Superior sulfate alternative providing excellent cleansing efficacy with significantly reduced irritation potential across all skin types.


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