Science
Mechanism of Action
Operating as a surfactant-hydrotrope and suspending agent, Sodium Naphthalenesulfonate effectively lowers water's surface tension, facilitating wetting. It enhances the water solubility of various cosmetic ingredients, aiding in the even distribution of insoluble solids and preventing phase separation. Additionally, its emulsifying properties help break down oils and grease, while keeping dirt particles suspended for easier removal.
Research
Clinical Evidence
High confidenceN/A
Key findings
- 01 Clinical studies at concentrations up to 2% have demonstrated that Sodium Naphthalenesulfonate is not a dermal sensitizing agent and exhibits only weak or no skin irritation potential in human subjects, even when tested for cumulative effects at up to 1%.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This ingredient demonstrates robust stability across a pH range of 5.0-7.0, maintaining high resistance to acids, alkalis, and hard water salts under recommended storage conditions.
Conflicts
- Strong oxidizing agents
Safety
Safety Profile
The CIR Expert Panel concluded that Sodium Naphthalenesulfonate is safe for dermal application in cosmetics. However, data were insufficient to assess safety for products contacting mucous membranes or for ingestion. While GHS classifications indicate potential skin and serious eye irritation, human clinical studies consistently report weak or no irritation at typical cosmetic use concentrations, specifically not as a cumulative irritant or sensitizer.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Sodium Naphthalenesulfonate is a valuable formulation aid, enhancing product stability and ingredient solubility with a low risk of skin irritation or sensitization at typical cosmetic concentrations.
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