Science
Mechanism of Action
This ingredient operates by acting as an anionic surfactant, which significantly reduces the surface tension of water. This action allows for more effective penetration into residues on the skin or hair, facilitating the efficient removal of dirt and oils. Beyond its primary cleansing function, Sodium Decyl Sulfate may also enhance the permeation of other substances by modifying the structural integrity of cellular membranes and tight junctions within the stratum corneum.
Research
Clinical Evidence
Insufficient-data confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Sodium Decyl Sulfate exhibits excellent dispersibility and maintains compatibility with hard water and high electrolyte concentrations. It is notably resistant to high temperatures and alkaline environments. While generally stable under normal storage, care must be taken to avoid contact with strong oxidizing agents, strong acids, strong bases, and strong reducing agents, as these can induce violent reactions or decomposition.
Conflicts
- strong oxidizing agents
- strong acids
- strong bases
- strong reducing agents
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has evaluated Sodium Decyl Sulfate, deeming it generally safe for use in cosmetic products, though with restrictions. This is primarily due to its potential to cause skin and serious eye irritation, particularly in sensitive individuals. It is not classified as a respiratory sensitizer, skin sensitizer, mutagen, or carcinogen. Typical usage concentrations observed in products like soaps and shampoos range from 0.1% to 29%.
Your Skin
Skin Compatibility
Our Assessment
Verdict
While an effective cleansing and foaming agent, Sodium Decyl Sulfate's high irritancy potential and industrial prevalence make its inclusion questionable for precision skincare, especially in formulations intended for sensitive skin or prolonged contact.
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