Triethylhexyl Trimellitate

What is Triethylhexyl Trimellitate?

Triethylhexyl Trimellitate is a synthetic oily liquid formed by esterifying trimellitic acid with 2-ethylhexanol. Commonly found in nail polishes, lipsticks, hair sprays, and flexible film-forming products. It works as a plasticizer by increasing the pliability of polymer films, reducing brittleness to prevent cracking during application and wear. As an emollient, it lubricates the skin surface, filling in irregularities for a smoother feel and aiding in even product distribution. It also supports skin conditioning by promoting softness without heavy occlusion, often improving the sensory profile of formulations with better slip and non-greasy finish. Its low volatility contributes to long-lasting effects in styling products.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →
PubChem View on PubChem →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Plasticizer
Improves flexibility and reduces brittleness of films (e.g., nail coatings, hair sprays), helping prevent cracking and enhancing smooth application.
Emollient
Softens and smooths skin by filling in surface roughness and improving slip; can also help reduce moisture loss when paired with occlusives and film formers.
Skin conditioning agent
Maintains skin softness, smoothness, and flexibility.

Benefits

Provides flexibility to films in nail coatings and hair sprays, minimizing cracks.

Softens skin and improves texture by filling surface roughness.

Reduces moisture evaporation when combined with other ingredients, aiding hydration retention.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
Individuals with dry or rough skin needing lightweight softening agents.
Those with rare allergies to trimellitic acid esters.
Users of nail polishes or hair styling products for durable, flexible finishes.
Individuals sensitive to synthetic plasticizers, despite low irritation potential.
People seeking non-comedogenic emollients for daily cosmetics.
People preferring completely natural ingredient profiles.

Safety Notes

  • Low hazard rating from safety assessments supports cosmetic use.
  • Non-comedogenic and shows minimal irritation in standard tests.

Frequently Asked Questions about Triethylhexyl Trimellitate

What is Triethylhexyl Trimellitate used for?

Primarily as a plasticizer in nail polishes and hair sprays, and emollient in skin products for flexibility and smoothness.

Is it safe for skin?

Safety reviews indicate low hazard and minimal irritation risk in cosmetic concentrations.

Does it cause breakouts?

It has a comedogenic rating of 0, suitable for acne-prone skin.