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Moumoujus

DILAURYLDIMONIUM CHLORIDE.

Questionable CAS 3401-74-9 / ANTISTATIC, HAIR CONDITIONING, SURFACTANT - CLEANSING

Dilauryldimonium Chloride functions as a cationic surfactant that cleanses the skin surface, helps stabilize oil-in-water emulsions in cosmetic products, and provides a smooth skin feel. It is valued for its skin conditioning properties, owing to its ability to adhere substantively to the skin.

Summary

Antistatic Hair conditioning Emulsifying Cleansing Skin conditioning Surfactant

Science

Mechanism of Action

Operating as a cationic surfactant, Dilauryldimonium Chloride possesses a positive charge, which assists in cleansing by attracting and helping to remove microorganisms from the skin's surface. It further acts as an emulsifying agent, critical for stabilizing oil-in-water formulations and enhancing product texture. Its substantive nature allows it to adhere to the skin, thereby delivering conditioning benefits.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Both
Optimal pH N/A
0 7 14

Stability

While a precise optimal pH range for Dilauryldimonium Chloride's stability is not clearly defined, related poly(diallyldimethylammonium chloride) has demonstrated stability across a pH range of 2-11.6 in some contexts, and maintained removal efficiency between pH 5–9 in others. As a cationic emulsifier, it is frequently co-formulated with fatty alcohols to establish stable oil-in-water emulsions with lamellar liquid crystal structures, which can enhance stability, aesthetic properties, moisturization, and active ingredient delivery.

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Moderate

Dilauryldimonium Chloride has not undergone review by the Cosmetic Ingredient Review (CIR) Expert Panel. Although not specifically evaluated by SCCS, related alkyl trimethylammonium chlorides have been assessed and noted for potential irritation, especially when used in combination with other ingredients. Its status for cosmetic use by the FDA is currently unknown. The Registry of Toxic Effects of Chemical Substances (RTECS) classifies this ingredient as a skin and eye irritant.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Questionable

Despite its functional benefits in cleansing, emulsification, and skin conditioning, the absence of a comprehensive safety review and its classification as a skin/eye irritant by RTECS position Dilauryldimonium Chloride as a questionable ingredient for precision skincare formulations.

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