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SODIUM C10-16 ALKYL SULFATE.

Questionable / CLEANSING, SURFACTANT - CLEANSING, SURFACTANT - FOAM BOOSTING

SODIUM C10-16 ALKYL SULFATE is an anionic surfactant primarily valued for its potent cleansing and foam-boosting capabilities. It effectively reduces surface tension, facilitating the emulsification of oils and water to efficiently remove impurities from skin and hair.

Summary

Surfactant/Cleansing Foam Boosting Emulsifying Agent Wetting Agent

Science

Mechanism of Action

This ingredient operates by lowering the surface tension of liquids, allowing for the stable mixing of typically immiscible oil and water phases. This action enables it to effectively dislodge and suspend lipid-based and particulate matter from cutaneous and follicular structures, preparing them for removal.

Research

Clinical Evidence

Insufficient-data confidence
Effective range 0.1–29%
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

The stability of products containing SODIUM C10-16 ALKYL SULFATE can be compromised by factors such as temperature and pH, which may lead to an increase in 1,4-dioxane levels over time. Storage above ambient temperatures is specifically noted to accelerate this increase.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
29%
Sensitization risk Moderate

The Cosmetic Ingredient Review (CIR) Expert Panel has affirmed the safety of SODIUM C10-16 ALKYL SULFATE and related alkyl sulfates when used at concentrations up to 29%, primarily in rinse-off products. It is recognized by the FDA and holds an EPA 'Green circle' status for low environmental concern. However, concentrations exceeding 10% pose a risk of serious eye injury. Highly concentrated aqueous solutions can induce severe skin irritation or burns, and even at concentrations between 10% and 12.5%, studies indicate potential for epidermal hyperplasia and cytotoxicity (ulceration) in mouse models. It may also cause an allergic skin reaction.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Questionable

While recognized as safe for use in rinse-off products at concentrations up to 29%, its demonstrated potential for significant skin and eye irritation, including epidermal cytotoxicity, at concentrations above 10-12.5% renders its suitability for precision skincare applications questionable, particularly for leave-on formulations or sensitive skin types.

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