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SODIUM C8-10 ALKYL SULFATE.

Questionable CAS 85338-42-7 / CLEANSING, SURFACTANT - CLEANSING, SURFACTANT - FOAM BOOSTING

SODIUM C8-10 ALKYL SULFATE is a potent surfactant widely employed for its exceptional cleansing, emulsifying, and foam-boosting properties. It effectively reduces surface tension to enable the removal of oils and particulate matter from skin and hair.

Summary

cleansing surfactant emulsifying foam boosting

Science

Mechanism of Action

This ingredient functions by lowering the surface tension of liquids, facilitating the uniform dispersion of immiscible substances such as oil and water. On the skin, it acts as a robust cleansing agent, aiding in the solubilization and removal of fat and soil particles.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

No specific data regarding 'dusting' of this ingredient in cosmetic formulations was found in the provided research. It is primarily utilized as a wash-off cleansing agent.

The Formula

Formulation

Solubility
Water
Optimal pH 9.5 – 11.5
0 7 14

Stability

This surfactant is stable within an alkaline pH range, typically exhibiting a pH between 9.5 and 11.5 in a 3% aqueous solution. Exposure to low pH environments can lead to precipitation.

Conflicts

  • low pH environments (causes precipitation)

Safety

Safety Profile

CIR Status
Safe with restrictions
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel deemed Sodium Sulfate (a related compound) safe for cosmetic use when formulated to be non-irritating. The EWG notes low concern for DNA damage, cancer, and developmental/reproductive effects for C8-10 alkyl sulfates. The OECD confirms alkyl sulfates are not skin sensitizers. However, undiluted SODIUM C8-10 ALKYL SULFATE is a direct irritant to skin and causes serious eye damage. Repeated dermal exposure to concentrated solutions may induce dermatitis, and concentrations of at least 10% C12-15 alkyl sulfates have caused dermal hyperplasia in mice.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Questionable

While an effective cleansing and foaming agent, SODIUM C8-10 ALKYL SULFATE presents a high irritancy risk, limiting its suitability for precision skincare, particularly for sensitive or dry skin types.

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