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TRILAURIN.

Valuable CAS 538-24-9 / SKIN CONDITIONING, VISCOSITY CONTROLLING

Trilaurin is a triglyceride functioning primarily as an emollient, forming a protective barrier to lock in moisture and enhance skin smoothness. It also plays a critical role in product formulation as a viscosity controller and can act as a penetration enhancer for other skincare ingredients.

emollient viscosity controlling solvent penetration enhancer

Science

Trilaurin operates by creating a protective, occlusive layer on the skin's surface, which effectively reduces transepidermal water loss and contributes to softening and smoothing the complexion. This action aids in maintaining and restoring the skin's natural lipid barrier. Beyond its emollient properties, Trilaurin helps stabilize the texture of cosmetic products by controlling viscosity and has demonstrated the capacity to improve the absorption of other active compounds into the skin.


Research

High confidence
Effective range 0.1–46%
Optimal

N/A

Key findings

  1. 01 Clinical tests demonstrated no irritation reactions when Trilaurin was applied to the skin in a commercial product.
  2. 02 Repeated-insult patch tests showed negative results for irritation in commercial products containing this concentration.

Transparency

Not commonly dusted

The Formula

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Trilaurin exhibits stability under typical conditions. For optimal preservation, it should be stored in a cool, dry, and well-ventilated environment, with containers kept tightly sealed. Exposure to extreme heat or open flames should be avoided to prevent degradation.

Synergies

  • Acts as a penetration enhancer for other chemicals, potentially increasing the efficacy of co-formulated active ingredients.

Safety

CIR Status
Safe as used
Max tested
46%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has deemed Trilaurin and related triglycerides safe for use in cosmetics at concentrations up to 46%. It is generally recognized as safe (GRAS) for food applications and shows low concern for common toxicological issues such as cancer, allergies, and developmental toxicity according to EWG data. No specific SCCS opinion was identified.


Your Skin

Yes Normal
Yes Dry
No Oily
Yes Sensitive
Irritancy Low
Comedogenicity Medium

Our Assessment

Valuable

Trilaurin is a valuable ingredient for enhancing skin barrier function and moisture retention, demonstrating excellent safety at high concentrations and contributing positively to formulation stability and ingredient delivery.


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