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Moumoujus

SULFATED CASTOR OIL.

Valuable CAS 8002-33-3 / CLEANSING, HUMECTANT, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

Sulfated Castor Oil is a multi-functional derivative of castor oil, engineered to be water-miscible while retaining its parent oil's beneficial properties. It primarily acts as an anionic surfactant, emulsifier, and humectant, enhancing formulation versatility and skin hydration. Beyond its functional role, it imparts moisturizing, anti-inflammatory, and antimicrobial benefits to the skin.

Summary

Cleansing Agent Emulsifier Humectant Surfactant Moisturizer Anti-inflammatory Agent Antimicrobial Agent Solubilizer

Science

Mechanism of Action

This ingredient functions as an anionic surfactant, effectively lowering interfacial tension to facilitate the emulsification of immiscible liquids like oil and water. As a humectant, it actively attracts and retains moisture, supporting optimal hydration within cosmetic products and on the skin. The sulfation process renders it hydrophilic, significantly increasing its water solubility. Furthermore, Sulfated Castor Oil delivers inherent moisturizing, anti-inflammatory, and antimicrobial properties, attributed to the ricinoleic acid derived from its castor oil origin, which aids in reducing redness, combating bacteria, and promoting healthy skin tissue.

Research

Clinical Evidence

Insufficient-data confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 6 – 8
0 7 14

Stability

Optimal stability is observed within a pH range of 6.0 to 8.0, typically for a 10% aqueous solution. This ingredient's molecular structure can undergo conformational changes depending on pH; at lower pH values, sulfate groups may become protonated, leading to a more compact conformation, while at higher pH values, deprotonation can result in a more extended conformation.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Moderate

The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that Ricinus Communis (Castor) Seed Oil and its related ricinoleate derivatives, including sulfated castor oil, are safe for use in cosmetic applications at typical concentrations. The FDA also classifies castor oil as generally recognized as safe and effective for specific non-cosmetic uses and permits its use in beauty products.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Sulfated Castor Oil is a valuable multi-functional ingredient, offering essential formulation benefits as an emulsifier and humectant, while also contributing moisturizing, anti-inflammatory, and antimicrobial properties to a wide range of skincare applications.

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