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TRIDECYL STEARATE.

Valuable CAS 31556-45-3 / SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

Tridecyl Stearate is an ester renowned for its multifaceted role as an emollient and skin-conditioning agent. It effectively softens and smoothes the skin while forming a protective barrier to reduce moisture loss, contributing to enhanced hydration and suppleness.

emollient skin conditioning

Science

Operating primarily as an emollient, Tridecyl Stearate creates a thin, protective film on the skin's surface. This barrier is instrumental in preventing transepidermal water loss, thereby maintaining the skin's natural moisture balance and improving its overall texture and feel. Its inherent lubricating properties also ensure a smoother application of cosmetic formulations.


Research

Low 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 Stearate demonstrates robust thermal and hydrolytic stability, along with good resistance to oxidation. Its stability within formulations is critical for maintaining product integrity over time, requiring consideration of environmental factors like pH, temperature, and light exposure.

Conflicts

  • Strong oxidizing agents

Safety

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

The Cosmetic Ingredient Review (CIR) Expert Panel concluded in 2015 that Tridecyl Stearate is safe for use in cosmetics, provided it is formulated to be non-irritating and non-sensitizing. Regulatory bodies like the U.S. FDA and the European Union's Cosmetics Regulation oversee its usage, and it is generally regarded as biocompatible with a low risk of irritation.


Your Skin

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

Our Assessment

Valuable

Tridecyl Stearate is a valuable emollient and skin conditioner, effectively enhancing skin hydration and smoothness across all skin types, with a well-established safety profile validated by key regulatory assessments.


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