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Moumoujus

C14-15 PARETH-8.

Valuable CAS 68951-67-7 / CLEANSING, SURFACTANT - CLEANSING

A synthetic non-ionic surfactant and emulsifying agent used to create smooth, stable textures in cleansing and conditioning formulas. It facilitates the removal of impurities by bridging the gap between water and oil-based residues on the skin surface.

Summary

surfactant cleansing agent emulsifier

Science

Mechanism of Action

By lowering the surface tension of water, C14-15 Pareth-8 allows for the efficient emulsification of sebum and environmental debris. Its molecular structure aligns at the oil-water interface, creating stable micellar structures that lift and rinse away contaminants without disrupting the skin's lipid barrier.

Research

Clinical Evidence

High confidence
Effective range 0.5–10%
Optimal

5%

Key findings

  1. 01 Human Repeated Insult Patch Tests (HRIPT) conducted on similar C12-15 alkyl PEG ethers demonstrate a lack of significant irritation or sensitization at standard usage levels.
  2. 02 Safety assessments by the CIR Expert Panel indicate that while undiluted forms may cause mild irritation, concentrations used in finished cosmetic products are considered non-irritating.

Transparency

Dusting Analysis

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

Because this is a functional ingredient rather than an active, its inclusion at very low percentages is typically for formulation stability rather than a marketing claim. It is rarely 'dusted' as it serves a clear structural purpose in the product.

The Formula

Formulation

Solubility
Water
Optimal pH 1 – 7
0 7 14

Stability

Highly resistant to hydrolysis with an HLB value of approximately 12.3. It maintains stability across a wide pH spectrum, though skin-compatible ranges (4.0-7.0) are preferred.

Synergies

  • Amphoteric surfactants
  • Glycerin
  • Non-polar oils

Conflicts

  • Strong oxidizing agents
  • Excessive concentrations of anionic surfactants

Safety

Safety Profile

CIR Status
Safe as used
Max tested
7.5%
Pregnancy
Safe
Sensitization risk Low

The 7.5% concentration limit applies specifically to leave-on formulations to ensure zero irritation potential.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

A reliable and safe synthetic emulsifier that ensures consistent product texture and effective cleansing across all skin types.

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