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Moumoujus

STEARYL PALMITATE.

Valuable CAS 2598-99-4 / BINDING, HAIR CONDITIONING, HUMECTANT, LIGHT STABILIZER, OPACIFYING, SKIN CONDITIONING, SURFACTANT - EMULSIFYING

Stearyl Palmitate is a multi-functional ester that significantly enhances the texture and stability of skincare formulations. It functions as an effective emollient, delivering a soft, non-greasy feel while supporting skin barrier function and improving overall skin suppleness.

Summary

emollient thickener film former emulsion stabilizer binder skin conditioning hair conditioning humectant opacifying

Science

Mechanism of Action

This ingredient primarily acts as a lipid-based emollient and film former, creating a lightweight, non-occlusive barrier on the skin's surface. This barrier aids in improving skin suppleness, elasticity, and overall barrier function, contributing to a healthy skin condition. Additionally, Stearyl Palmitate plays a crucial role in formulation integrity by functioning as a thickener, binder, and emulsion stabilizer, ensuring consistent product viscosity and performance.

Research

Clinical Evidence

High confidence
Effective range 2–15%
Optimal

Effective at concentrations between 2% and 15%.

Key findings

  1. 01 Clinical observations confirm that Stearyl Palmitate, when incorporated at concentrations ranging from 2% to 15%, effectively acts as a thickener, emollient, and film former in cosmetic preparations.
  2. 02 Studies indicate its capacity to enhance emulsion stability and mitigate the greasy sensation commonly associated with oil-rich formulations, thereby improving both user experience and product payoff, particularly in solid stick cosmetics.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Stearyl Palmitate is insoluble in water, requiring incorporation into the oil phase of formulas. It is crucial to avoid mixing with strong acids (which can release heat), strong oxidizing acids, caustic solutions, alkali metals, or hydrides, as these interactions can lead to exothermic reactions or the generation of flammable hydrogen. This ingredient is noted for its ability to effectively manage final formula viscosity and enhance stability across varying temperatures.

Conflicts

  • acids (strong)
  • strong oxidizing acids
  • caustic solutions
  • alkali metals
  • hydrides

Safety

Safety Profile

CIR Status
Safe as used
Max tested
15%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that Stearyl Palmitate is safe for use in cosmetics under current practices and concentrations, provided formulations are non-irritating. The U.S. FDA also permits its use as an indirect food additive in specific food packaging materials.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Stearyl Palmitate is a valuable ingredient for enhancing formulation aesthetics and stability, providing emollience and barrier support with a favorable safety profile across all skin types.

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