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DISTEARYL EPOXYPROPYLMONIUM CHLORIDE.

Valuable CAS 29681-28-5 / ANTISTATIC, HAIR CONDITIONING

Distearyl Epoxypropylmonium Chloride is a cationic surfactant engineered for enhanced hair and skin conditioning. It functions as an effective oil-in-water emulsifier, crucial for formulation stability and improving the delivery of active ingredients. Its substantive nature allows it to adhere to various surfaces, imparting significant conditioning and moisturizing benefits.

Summary

antistatic hair conditioning emulsifying skin conditioning moisturizing structure-replenishing

Science

Mechanism of Action

As a cationic surfactant, Distearyl Epoxypropylmonium Chloride operates by modifying water's interfacial tension, serving as an emulsifier, disperser, and wetting agent. Its inherent cationic nature facilitates adsorption onto negatively charged surfaces, such as hair fibers, to neutralize static and enhance smoothness. On skin, it reduces flakiness, mitigates irritation, and fortifies the skin's protective barrier by forming a gentle, invisible film, thereby combating moisture loss. Additionally, it contributes to the stabilization of oil-in-water emulsions within formulations.

Research

Clinical Evidence

High confidence
Effective range 0.1–10%
Optimal

2%

Key findings

  1. 01 Effective at concentrations between 0.5% and 10% for hair and skin conditioning, attributed to its highly substantive, cationic nature. It acts as a cationic emulsifier, forming stable oil-in-water (o/w) emulsions with lamellar liquid crystal structures, which enhance stability, aesthetic properties, moisturization, and active ingredient delivery.
  2. 02 Demonstrates efficacy in providing hair softness at usage rates from 0.1% to 3.0% in shampoo, conditioner, and treatment formulations. In leave-on products, concentrations are typically maintained below 1% to mitigate potential build-up or sensitivity concerns.
  3. 03 Functions as a moisturizing and structure-replenishing agent when used at concentrations between 2% and 3%.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH 3 – 7
0 7 14

Stability

Stable within a pH range of 3 to 7. Temperatures exceeding 80°C should be avoided. For optimal formulation, it is typically combined with fatty alcohols to create stable oil-in-water (o/w) emulsions that improve product stability, aesthetic appeal, and moisturization properties. This ingredient can be incorporated into the oil phase of a formulation, with heat applied to accelerate its dissolution.

Synergies

  • Fatty alcohols (for stable o/w emulsions)

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
10%
Sensitization risk Unknown

The Cosmetic Ingredient Review (CIR) Expert Panel has not specifically reviewed Distearyl Epoxypropylmonium Chloride. Direct oral, dermal, and inhalation toxicity for this ingredient are not determined, and no GHS classification or hazard statements were found. However, for Distearyldimethylammonium chloride, a closely related substance, GHS classification indicates it 'Causes serious eye damage' and is 'Very toxic to aquatic life with long lasting effects'. It is also noted as a skin irritant and corrosive to eyes. This highlights a need for caution and further specific data for Distearyl Epoxypropylmonium Chloride.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
No Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

This ingredient is valuable for its efficacy in conditioning and emulsification, enhancing both product stability and skin moisturization, though further specific safety data for the exact compound is warranted.

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