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DISODIUM LAURETH-9 SULFOSUCCINATE.

Valuable CAS 58450-52-5 / CLEANSING, SURFACTANT - CLEANSING, SURFACTANT - FOAM BOOSTING, SURFACTANT - HYDROTROPE

Disodium Laureth-9 Sulfosuccinate is a mild anionic surfactant utilized to effectively cleanse skin and hair by reducing water's surface tension. It is valued for its gentle yet efficient removal of impurities while significantly enhancing lather stability and creaminess in rinse-off formulations.

Summary

Cleansing Foam Boosting Emulsifying

Science

Mechanism of Action

This ingredient functions as an anionic surfactant by decreasing the surface tension of water, which facilitates the efficient removal of dirt, excess oil, and impurities from both skin and hair. Furthermore, it acts as an emulsifier, stabilizing mixtures of oil- and water-soluble components, and serves as a foam booster to generate a rich, stable lather.

Research

Clinical Evidence

Low confidence
Effective range 0.4–10%
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 5 – 7
0 7 14

Stability

Disodium Laureth-9 Sulfosuccinate exhibits robust chemical resistance to hydrolysis and maintains its efficacy across a broad pH range, typically from 4.0 to 9.0. However, optimal stability is observed within a narrower pH range of 5.0 to 7.0. It also provides excellent foam stability, even when formulated in hard water conditions.

Conflicts

  • Must not be compounded directly with ingredients with a pH above 7.0 due to stability concerns.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
10%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel concluded that alkyl PEG sulfosuccinates, including Disodium Laureth-9 Sulfosuccinate, are safe for use in current cosmetic practices and concentrations, provided the final product is formulated to be non-irritating. Usage concentrations for leave-on products ranged from 0.06% to 2%, while for rinse-off products, concentrations were between 0.4% and 10%.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

This gentle, low-irritancy surfactant is a valuable component for a wide range of cleansing formulations, effectively purifying skin and boosting lather quality across all skin types while maintaining robust formulation stability.

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