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OLEAMIDOPROPYL DIMETHYLAMINE PROPIONATE.

Avoid CAS 67801-61-0 / ANTISTATIC, HAIR CONDITIONING

Oleamidopropyl Dimethylamine Propionate is a versatile cationic ingredient functioning primarily as an emulsifier and surfactant, enabling the stable blending of oil and water phases in formulations. It contributes to skin moisturization and softness by forming a protective barrier, yet it carries a notable risk of contact sensitization.

Summary

Antistatic Emulsifying Hair Conditioning Skin Conditioning Surfactant Antioxidant Antibacterial Antiseptic

Science

Mechanism of Action

This ingredient operates as a cationic emulsifier and surfactant, facilitating the homogeneous mixture of immiscible liquids like oil and water, and effectively reducing static electricity. In topical applications, its oleic acid component, being hydrophobic, forms a barrier on the skin's surface. This barrier helps to diminish transepidermal water loss (TEWL), thereby enhancing skin moisturization and emollience. Concurrently, its hydrophilic segment ensures compatibility within aqueous formulations. Beyond its primary roles, it also exhibits antioxidant properties and can act as an antibacterial and antiseptic agent against certain microorganisms.

Research

Clinical Evidence

Medium confidence
Effective range 0.1–0.6%
Optimal

N/A

Key findings

  1. 01 A study indicated that a 0.3% concentration was linked to contact sensitization in 11% (13 out of 119) of patients with cosmetic-related allergic contact dermatitis, especially when used on compromised skin or around the eyes.
  2. 02 Concentrations ranging from 0.1% to 0.6% have been observed to enhance skin moisturization, contributing to improved softness and a reduction in dryness for various skincare formulations.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Both
Optimal pH N/A
0 7 14

Stability

Formulations must be carefully designed to prevent the generation of nitrosamines.

Conflicts

  • Potential for cross-reactivity with other amideamine-type emulsifiers, including but not limited to ricinoleamidopropyl dimethylamine lactate, tallowamidopropyl dimethylamine, lauramidopropyl dimethylamine, myristamidopropyl dimethylamine, cocamidopropyl betaine, and cocamide-DEA.
  • Presence of 3,3-dimethylaminopropylamine (DMAPA) as a sensitizing impurity poses a significant formulation challenge.

Safety

Safety Profile

CIR Status
Safe with restrictions
Sensitization risk High

The CIR Expert Panel concluded that this ingredient, along with related fatty acid amidopropyl dimethylamines, is safe for cosmetic use provided it is formulated to be non-sensitizing, potentially relying on a Quantitative Risk Assessment (QRA). A primary concern is the potential for the sensitizing impurity, 3,3-dimethylaminopropylamine (DMAPA), to be present in concentrations exceeding recommended limits; for instance, leave-on products may contain up to 1% if the DMAPA content is maintained at 0.6%. Formulations must actively prevent the generation of nitrosamines. The EWG highlights significant use restrictions and moderate concerns regarding its potential for allergies and immunotoxicity.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Avoid

Despite its emulsifying and moisturizing benefits, the high risk of contact sensitization, even at low concentrations, coupled with medium irritancy and comedogenicity, makes Oleamidopropyl Dimethylamine Propionate a questionable choice for precision skincare.

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