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SESAMIDOPROPYL DIMETHYLAMINE.

Optional / ANTISTATIC, HAIR CONDITIONING, SURFACTANT - CLEANSING

Sesamidopropyl Dimethylamine is a precision-derived ingredient, originating from sesame oil and classified within the fatty acid amidopropyl dimethylamine group. Primarily serving as a cationic surfactant and emulsifier, it significantly enhances formulation aesthetics and tactile properties, particularly in carefully controlled acidic environments.

Summary

Cationic Surfactant Hair Conditioning Agent Emulsifier Skin Conditioning Agent Texture Enhancer

Science

Mechanism of Action

Operating as a cationic surfactant, Sesamidopropyl Dimethylamine functions by creating electrostatic interactions with negatively charged surfaces, including the skin. This mechanism allows it to impart conditioning effects, refine skin texture, mitigate tackiness, and alleviate dryness in formulations, while simultaneously stabilizing emulsion systems effectively.

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 3.5 – 6.5
0 7 14

Stability

Optimal performance as a cationic emulsifier and conditioner is achieved within a low pH range, ideally between 3.5 and 4.0 for maximal viscosity. Formulations may experience significant thinning if pH exceeds 4.2.

Conflicts

  • Anionic (negatively charged) ingredients, particularly in low pH formulations.

Safety

Safety Profile

CIR Status
Reviewed by the CIR Expert Panel, which concluded that Sesamidopropyl Dimethylamine, as part of the 24 fatty acid amidopropyl dimethylamines, is safe for cosmetic use when formulated to be non-sensitizing.
Max tested
3%
Sensitization risk Low

The maximum concentration of 3.0% is inferred from related ingredients within the same CIR-reviewed class, primarily from rinse-off hair conditioners. No specific SCCS opinion or explicit FDA approval status has been found for this ingredient. While the class is deemed non-sensitizing, some related compounds have shown transient, slight to moderate primary irritation in subjects, not indicative of contact sensitization.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Optional

While recognized as safe within its ingredient class by the CIR, Sesamidopropyl Dimethylamine primarily functions as a valuable conditioning and emulsifying agent, though specific efficacy and compatibility data for direct skin applications remain limited.

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