Triethoxycaprylylsilane

What is Triethoxycaprylylsilane?

Triethoxycaprylylsilane is a synthetic organosilicon compound, an alkylalkoxysilane with a caprylyl chain linked to silicon bearing three ethoxy groups. Employed mainly in color cosmetics such as pressed powders, foundations, and eyeshadows, it serves as a surface modifier for inorganic pigments and fillers like titanium dioxide. By hydrolyzing and condensing on particle surfaces, it creates a thin, flexible hydrophobic coating. This treatment promotes even dispersion in formulation bases, enhances adhesion to skin, imparts water repellency, and refines sensory attributes like slip and softness. Additionally, it acts as a binding agent, strengthening the mechanical structure of solid formats to prevent breakage while preserving application ease and payoff.

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

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Binder
Helps hold solid ingredients together to form cohesive tablets, compacts, or sticks, improving pressability, integrity, and wear of the finished product.
Binding
Provides cohesion by helping ingredients stick together, improving the strength and integrity of pressed powders, tablets, or solid bars.

Benefits

Strengthens cohesion in powders and compacts for durable products.

Boosts pigment adhesion for smoother application and extended wear.

Adds hydrophobicity to resist water and moisture.

Who It's For

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

Who May Benefit Who Should Avoid
Users of pressed powders seeking long-lasting hold.
Those with rare silicone sensitivities.
Individuals applying color cosmetics for improved texture.
Users avoiding synthetic binders.
People preferring water-resistant makeup formulas.
Individuals preferring minimalist formulations.
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Safety Notes

  • Rated low hazard by EWG with scores of 1.
  • Non-comedogenic, unlikely to clog pores.

Frequently Asked Questions about Triethoxycaprylylsilane

What does Triethoxycaprylylsilane do in cosmetics?

It binds particles in powders, improves cohesion, and treats pigments for better dispersion and water resistance.

Is it safe for skin?

Low EWG rating of 1 indicates minimal concerns; generally well-tolerated in rinse-off and leave-on products.

Does it clog pores?

Comedogenic rating of 0 means it does not promote acne.