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C9-11 PARETH-6 CARBOXYLIC ACID.

Valuable CAS 174125-27-0 / CLEANSING, SURFACTANT - CLEANSING

A sophisticated anionic surfactant engineered to bridge the gap between high-performance cleansing and skin barrier preservation. It belongs to the alkyl ether carboxylic acid family, valued for its ability to produce stable foam and lift impurities without the harsh, stripping effects associated with traditional sulfates.

Cleansing Surfactant Emulsifying Foam Stabilizing

Science

This ingredient functions as a mild surfactant that lowers the surface tension of water, enabling the emulsification of sebum and environmental debris for efficient removal. Its unique ethoxylated structure allows it to maintain structural integrity and cleansing efficacy even in hard water environments, providing a smoother, more conditioned skin feel post-rinse.


Research

High confidence
Effective range 0.5–15%
Optimal

10%

Key findings

  1. 01 Clinical patch testing at 10% concentration indicates the ingredient is non-sensitizing and possesses low potential for primary skin irritation.
  2. 02 Research demonstrates its utility as a co-surfactant (0.5-15%) to mitigate the irritation profile of aggressive primary surfactants like SLS while enhancing overall foam stability.

Transparency

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

As a functional surfactant and foam booster, this ingredient is typically used at effective concentrations (0.5%+) to impact the formula's texture and cleansing ability. It is rarely included at symbolic levels because its primary benefit is mechanical and structural.


The Formula

Solubility
Water
Optimal pH 4 – 8
0 7 14

Stability

Highly resilient across a wide pH spectrum (2.0 to 12.0) and resistant to oxidative degradation. It maintains performance in high-electrolyte formulations.

Synergies

  • Anionic surfactants
  • Non-ionic surfactants
  • Amphoteric surfactants (for foam boosting)

Conflicts

  • Cationic surfactants
  • Quaternary ammonium compounds

Safety

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

Generally recognized as a milder, safer alternative to traditional sulfates in rinse-off applications.


Your Skin

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

Our Assessment

Valuable

A high-precision, mild cleansing agent that optimizes foam quality and reduces irritation in surfactant-based systems.


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