Stearamidopropyl Pg-Dimonium Chloride Phosphate

What is Stearamidopropyl Pg-Dimonium Chloride Phosphate?

Stearamidopropyl PG-Dimonium Chloride Phosphate is a synthetic quaternary ammonium compound with a phosphate moiety, derived from stearic acid, propylene glycol, and chloride salts. This amphiphilic structure combines hydrophobic alkyl chains and hydrophilic charged groups, mimicking natural phospholipids. It appears in hair care products like conditioners, shampoos, and detanglers, typically in rinse-off formulas. In formulations, it adsorbs onto the negatively charged hair surface via electrostatic attraction, forming a protective layer. This reduces inter-fiber friction, neutralizes static buildup from shampooing or brushing, and imparts lubricity for easier combing. The phosphate group enhances mildness and substantivity, allowing even deposition without greasiness, supporting its role in daily-use cosmetics for enhanced hair feel.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Antistatic agent
Reduces static electricity and flyaways by improving surface conductivity, enhancing hair manageability and smoothness in conditioners and styling products.
Hair conditioning
Improves softness, shine, and manageability by reducing friction and static; commonly achieved with cationic agents, silicones, oils, or conditioning polymers.

Benefits

Minimizes static electricity to prevent flyaways and improve styling ease.

Enhances hair softness and detangling by lowering surface friction.

Provides lightweight conditioning for shine and smooth texture.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
Individuals with dry, frizzy, or static-prone hair.
Those with rare allergies to quaternary ammonium derivatives.
Users needing better manageability in daily rinse-off products.
Individuals sensitive to phosphate-containing surfactants.
People with normal to coarse hair types seeking subtle smoothness.
People preferring strictly anhydrous or quat-free formulations.

Safety Notes

  • Considered low concern for typical cosmetic concentrations.
  • Non-comedogenic, suitable for acne-prone skin in hair products.

Frequently Asked Questions about Stearamidopropyl Pg-Dimonium Chloride Phosphate

What products contain this ingredient?

Commonly found in hair conditioners, shampoos, and detangling sprays for antistatic effects.

Is it suitable for sensitive scalps?

Its mild cationic nature supports use in gentle hair care routines.

Does it affect hair color?

Designed for compatibility in colored hair maintenance products.