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Moumoujus

STEARAMINE OXIDE.

Optional CAS 2571-88-2 / ANTISTATIC, CLEANSING, HAIR CONDITIONING, SURFACTANT - CLEANSING, SURFACTANT - FOAM BOOSTING, SURFACTANT - HYDROTROPE

Stearamine Oxide functions as a versatile surfactant, effectively reducing surface tension to facilitate the mixing of oil and water for optimal cleansing. Beyond its surfactant role, it offers conditioning benefits, promoting a smooth skin feel and improving hair texture and manageability.

Summary

Antistatic Cleansing Foam Boosting Hair Conditioning Hydrotrope Surfactant

Science

Mechanism of Action

As a surfactant, Stearamine Oxide reduces interfacial surface tension, enabling oil and water phases to emulsify, thereby enhancing the efficacy of cleansing. On the skin, it contributes a conditioning effect, imparting a smooth and soft sensation. Furthermore, it acts as a foam booster to generate richer lather and serves as a hydrotrope, increasing the solubility of other compounds within aqueous systems.

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

Stearamine Oxide exhibits solubility in both polar and non-polar solvents, with generally higher solubility observed in non-polar systems. Despite its inherently low estimated solubility in water (0.00318 mg/L at 25 °C), it effectively functions in aqueous formulations by reducing surface tension and enhancing the solubility of other substances as a hydrotrope.

Conflicts

  • Nitrosating agents (due to potential for nitrosamine formation)

Safety

Safety Profile

CIR Status
Safe with restrictions
Max tested
5%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel concluded Stearamine Oxide is safe for use in rinse-off cosmetic products under current conditions. For leave-on applications, its concentration is restricted to a maximum of 5%. The CIR Panel noted it is a mild irritant with potential for mild cumulative irritation. Crucially, cosmetic products containing Stearamine Oxide must be formulated to be free of potentially carcinogenic nitrosamine compounds and must not contain nitrosating agents.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Optional

Stearamine Oxide is an optional ingredient, primarily valued for its surfactant and conditioning properties in rinse-off applications, but requires careful formulation due to its mild irritant potential and the critical concern regarding nitrosamine formation.

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