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CAPRYLETH-6 CARBOXYLIC ACID.

Valuable CAS 53563-70-5 / CLEANSING, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

A sophisticated crypto-anionic surfactant that bridges the gap between high-performance cleansing and extreme skin mildness. It is engineered to stabilize complex formulations while providing a protective effect on the skin's moisture barrier during the wash-off process.

Mild Surfactant Hydrotrope Emulsifying Agent Irritation Mitigant

Science

This ingredient functions by reducing surface tension and altering micellar architecture. Its unique ether carboxylic structure allows it to act as a buffer, shielding the skin from the aggressive potential of traditional surfactants by inhibiting their direct interaction with epidermal proteins.


Research

High confidence
Effective range 0.5–2%
Optimal

1%

Key findings

  1. 01 Demonstrated a significant reduction in irritation when used as a co-surfactant with Sodium Lauryl Sulfate (SLS), effectively neutralizing the harshness of traditional cleansing agents.
  2. 02 Confirmed as a barrier-safe cleansing agent in binary mixtures, maintaining skin integrity even in sensitive hygiene applications.

Transparency

Not commonly dusted
Min. effective
0.5%
Red flag below
0.1%

With an active range beginning at 0.5%, concentrations below 0.1% are typically utilized for incidental emulsification rather than for its clinical 'shielding' or mild-cleansing benefits.


The Formula

Solubility
Water
Optimal pH 2 – 12
0 7 14

Stability

Exhibits exceptional resilience in extreme pH environments and maintains stability in hard water or high-electrolyte solutions. Functions as a hydrotrope to improve the solubility of surrounding ingredients.

Synergies

  • Nonionic surfactants
  • Cationic conditioning agents
  • Quaternary compounds

Conflicts

  • Un-neutralized acid forms may cause hydrolysis in specific alkyl ether sulfates

Safety

CIR Status
Safe as used
Max tested
5%
Pregnancy
Safe
Sensitization risk Low

Due to its high molecular weight and rapid biodegradability, systemic absorption is negligible. It is classified as non-sensitizing.


Your Skin

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

Our Assessment

Valuable

An indispensable co-surfactant for formulating high-efficacy cleansers that must remain non-irritating to compromised or sensitive skin barriers.


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