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Moumoujus

SORBETH-160 TRISTEARATE.

Valuable / SURFACTANT - CLEANSING

A polyethoxylated sorbitol ester of stearic acid, Sorbeth-160 Tristearate functions as a versatile surfactant and emulsifier. It is instrumental in stabilizing various emulsion types, ensuring product consistency, enhancing sensorial texture, and providing mild hydrating benefits to the skin.

Summary

Emulsifier Surfactant Texture Enhancer Hydrating Agent Product Stabilizer

Science

Mechanism of Action

Sorbeth-160 Tristearate operates as a surfactant by effectively reducing the surface tension between immiscible phases, facilitating the formation and stability of emulsions. It primarily functions as a water-in-oil (W/O) emulsifier and can further stabilize oil-in-water (O/W) emulsions when combined with polysorbates. In cosmetic formulations, this prevents phase separation, ensuring a smooth and homogenous product. Beyond its emulsifying capabilities, the ingredient improves product spreadability, imparts a soft, velvety texture, and contributes to skin hydration by aiding in the reduction of transepidermal water loss.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Sorbeth-160 Tristearate generally exhibits stability across a broad pH range; however, its ester bonds are susceptible to hydrolysis when exposed to strong acidic conditions, which may compromise its structural integrity and performance.

Synergies

  • polysorbates (for stabilizing oil-in-water emulsions)

Conflicts

  • strong acidic conditions (due to hydrolysis of ester bonds)

Safety

Safety Profile

CIR Status
Safe as used with restrictions
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel assessed Sorbeth-160 Tristearate within a larger group of Polysorbates and related polyethoxylated sorbitan or sorbitol esters, concluding the group is safe for cosmetic use when formulated to be non-irritating. Notably, Sorbeth-160 Tristearate was not reported to be in current use at the time of the 2015 review, leading to no specific maximum concentration being provided for this ingredient. Related ethoxylated sorbitan esters have demonstrated no skin reactions or dermal irritation in animal and clinical tests at concentrations up to 100%. A non-ethoxylated, related compound, Sorbitan Tristearate (E492), holds Generally Recognized As Safe (GRAS) status from the FDA for food applications. There is no specific SCCS opinion available for Sorbeth-160 Tristearate.

Your Skin

Skin Compatibility

No Normal
No Dry
No Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

Sorbeth-160 Tristearate is a valuable functional ingredient for stabilizing emulsions and enhancing texture in cosmetic formulations, though specific usage concentrations are not widely reported due to its historical lack of current market use.

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