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TRIDECYL STEAROYL STEARATE.

Valuable CAS 125804-06-0 / SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

TRIDECYL STEAROYL STEARATE is an ester known for its emollient and skin-conditioning properties, forming a protective barrier on the skin's surface. It effectively minimizes transepidermal water loss, thereby enhancing skin hydration and contributing to a visibly smoother texture.

Emollient Skin-conditioning agent Viscosity controlling

Science

This compound interacts with lipid molecules within the stratum corneum, the outermost layer of the skin, to establish a protective film. This action proficiently locks in moisture, preventing excessive water evaporation and reinforcing the skin's natural barrier. By filling microscopic gaps between dead cells, it also imparts a notable softening and smoothing effect on the complexion.


Research

High confidence
Effective range 1–8%
Optimal

N/A


Transparency

Not commonly dusted

The Formula

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

TRIDECYL STEAROYL STEARATE exhibits robust thermal stability. As an ester, its stability within formulations is critical and can be influenced by environmental factors such as pH, temperature, and light exposure. It can also enhance the stability and shelf life of cosmetic products by mitigating the oxidation of other ingredients.

Synergies

  • Antioxidant-sensitive ingredients (due to its potential to prevent oxidation)

Conflicts

  • Strong oxidizing agents

Safety

CIR Status
Safe as used
Max tested
18%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has assessed 'Tridecyl Stearate' as safe for use in cosmetics, with reported usage levels up to 18% and typical concentrations ranging from 1% to 8%. While TRIDECYL STEAROYL STEARATE (C49H96O3) is chemically distinct from 'Tridecyl Stearate' (C31H62O2), cosmetic databases often refer to them interchangeably. Both are deemed safe and compliant with U.S. FDA and European Union's Cosmetics Regulation guidelines.


Your Skin

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

Our Assessment

Valuable

TRIDECYL STEAROYL STEARATE is a valuable emollient and skin-conditioning agent, well-tolerated across all skin types, that effectively supports skin barrier function and hydration without posing significant irritancy or comedogenicity concerns.


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