Science
Mechanism of Action
This ingredient operates by reducing the surface tension between otherwise immiscible substances such as oil and water. Its unique molecular structure encompasses both lipophilic (oil-attracting) and hydrophilic (water-attracting) segments, allowing it to bridge disparate phases. This dual functionality enables it to stabilize emulsions, facilitate the solubilization of other ingredients, and efficiently combine water with oil-based impurities for cleansing.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Sorbeth-60 Tetrastearate demonstrates good stability within a pH range of 4 to 8 and is generally heat tolerant. However, it is recommended to avoid temperatures exceeding 80°C during formulation to preserve its integrity. Related compounds have shown enhanced stability against heat and oxidation.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that Sorbeth-60 Tetrastearate is safe for use in cosmetics at concentrations not exceeding 25%. A specific caution advises against its application on damaged skin. While the ethoxylation process can lead to trace amounts of 1,4-dioxane, purification steps and FDA oversight aim to ensure these levels remain safe. Related Polysorbates have exhibited minimal potential for human skin irritation, sensitization, or phototoxicity in extensive clinical studies.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Sorbeth-60 Tetrastearate is a valuable ingredient for its robust emulsifying and surfactant capabilities, enabling stable and effective formulations with a low potential for irritation.
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References
Sources