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C12-15 PARETH-8 PHOSPHATE.

Valuable CAS 68071-35-2 / CLEANSING, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

A sophisticated anionic emulsifier and surfactant engineered to bridge the gap between oil and water phases in complex formulations. It is particularly valued in precision skincare for its ability to stabilize delicate active ingredients while providing a lightweight, non-greasy finish.

Surfactant Emulsifying agent Cleansing agent Dispersing agent

Science

This ingredient functions as an interfacial stabilizer, reducing surface tension to create ultra-fine, uniform emulsions. In cleansing systems, it organizes into micelles to encapsulate and lift debris, while in sunscreens, it acts as a dispersing agent that ensures inorganic filters are distributed evenly for consistent UV protection and enhanced water resistance.


Research

High confidence
Effective range 1–5%
Optimal

2%

Key findings

  1. 01 Clinical data indicates that a 2.0% concentration successfully stabilizes oil-in-water moisturizing serums with high dermatological tolerance.
  2. 02 Formulation research demonstrates its utility as a co-emulsifier for maintaining the integrity of sensitive actives like Ectoin and Vitamin C.

Transparency

Not commonly dusted
Min. effective
1%
Red flag below
0.5%

As a functional emulsifier rather than a standalone active, 'dusting' is less common; however, concentrations below 1% may indicate it is used merely as a secondary stabilizer rather than the primary emulsifying system.


The Formula

Solubility
Both
Optimal pH 3 – 10
0 7 14

Stability

Exhibits exceptional versatility across a broad pH range; it is specifically effective in acidic environments (pH 3-5) where other emulsifiers often fail.

Synergies

  • Ectoin
  • Vitamin C
  • Titanium Dioxide
  • Inorganic UV filters

Conflicts

  • Strong oxidizing agents
  • Cationic surfactants

Safety

CIR Status
Not reviewed (prioritized for 2025 assessment)
Pregnancy
Safe
Sensitization risk Low

Listed on the EU CosIng database as safe for cosmetic use; belongs to the Alketh Phosphates group known for high skin biocompatibility.


Your Skin

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

Our Assessment

Valuable

An essential structural component for creating stable, non-irritating, and high-performance delivery systems for active ingredients.


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