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DISODIUM LAURYL SULFOSUCCINATE.

Valuable CAS 13192-12-6 / 19040-44-9 / 26838-05-1 / CLEANSING, FOAMING, SKIN CONDITIONING, SURFACTANT - CLEANSING, SURFACTANT - FOAM BOOSTING, SURFACTANT - HYDROTROPE

Disodium Lauryl Sulfosuccinate is a gentle anionic surfactant known for its effective cleansing and foaming capabilities. It works to reduce surface tension, aiding in the emulsification and removal of impurities from the skin while also offering conditioning benefits.

Summary

Cleansing Foam boosting Foaming Hydrotrope Skin conditioning Surfactant

Science

Mechanism of Action

As an anionic surfactant, Disodium Lauryl Sulfosuccinate operates by lowering the surface tension between water and hydrophobic substances like oils and dirt. This action allows it to emulsify and suspend these particles, facilitating their easy rinse-off. It functions as a cleansing, foam-boosting, and foaming agent, as well as a skin conditioning agent and hydrotrope. Notably, it can also mitigate the irritating effects of stronger surfactants such as Sodium Lauryl Sulfate (SLS).

Research

Clinical Evidence

Medium confidence
Effective range 1.68–10%
Optimal

N/A

Key findings

  1. 01 In human studies, concentrations of 1.68%, 5%, and 10% (in aqueous solutions) did not induce clinically significant irritation or allergic contact dermatitis in normal subjects or dermatitis patients.
  2. 02 A cumulative skin irritation study predicted mild irritation at 0.168%, and 10% in a citrate buffer was classified as a mild skin irritant in healthy subjects, highlighting the importance of formulation context.
  3. 03 A rabbit study demonstrated a low comedogenic potential, receiving a score of 1 (indicating increased visible hyperkeratosis without comedone formation) at a concentration of 16.8%.

Transparency

Dusting Analysis

Not commonly dusted

Disodium Lauryl Sulfosuccinate is an active ingredient primarily used for cleansing and foaming, typically at percentages well above trace amounts. It is not commonly 'dusted' or included at minimal concentrations simply for label claim.

The Formula

Formulation

Solubility
Water
Optimal pH 5 – 7
0 7 14

Stability

This ingredient is stable within a pH range of 5.0 to 7.0. It is sensitive to high temperatures and prolonged storage at elevated temperatures, which can complicate its incorporation into formulations. Raw material may stratify below 7°C, requiring gentle warming up to 38°C with agitation for reconstitution.

Synergies

  • Effectively reduces the irritating potential of other surfactants, such as Sodium Lauryl Sulfate (SLS).

Conflicts

  • Ingredients with a pH above 7.0 should not be compounded directly with Disodium Lauryl Sulfosuccinate.

Safety

Safety Profile

CIR Status
Safe with restrictions
Max tested
10%
Sensitization risk Low

The CIR Expert Panel deems Disodium Lauryl Sulfosuccinate safe for use in cosmetic formulations up to 3% in leave-on products and up to 10% in rinse-off products, provided the final formulation is non-irritating. It generally poses a low risk of skin irritation; however, high concentrations or extended contact may lead to mild irritation. Its large molecular structure limits skin penetration, and it has not been identified as a sensitizer. Trace amounts of 1,4-dioxane, a byproduct of ethoxylation, may be present but can be controlled through purification. It is approved for cosmetic use by the FDA in the U.S. and adheres to EU Cosmetics Regulation.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Disodium Lauryl Sulfosuccinate is a valuable, gentle surfactant that effectively cleanses and conditions the skin, making it suitable for a broad range of skin types, including sensitive skin, with a low risk of irritation or comedogenicity.

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