C12-16 Pareth-9

What is C12-16 Pareth-9?

C12-16 Pareth-9 is a nonionic surfactant derived from a blend of synthetic fatty alcohols ranging from 12 to 16 carbon atoms, ethoxylated with nine units of ethylene oxide. This modification enhances its water solubility and mildness. Commonly found in cleansers, shampoos, body washes, lotions, and creams, it works by reducing surface tension between liquids and solids, enabling the removal of dirt, oils, and impurities during washing. As an emulsifier, it forms a protective film at the oil-water interface, preventing separation and ensuring product stability and smooth texture. Its balanced hydrophilic-lipophilic properties make it versatile for rinse-off and leave-on formulations, contributing to rich lather in cleansers and uniform consistency in emulsions without compromising gentleness.

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:

Surfactant
Lowers surface tension to enable cleansing, emulsifying, and foaming; central to shampoos, body washes, and many emulsions and micellar systems.
Emulsifying agent
Enables stable mixing of oil and water phases by forming an interfacial film, helping create lotions, creams, and cleansers with consistent texture.

Benefits

Supports thorough yet gentle cleansing by effectively lifting away impurities.

Promotes stable emulsions for smooth, consistent product textures.

Aids in foaming action for satisfying application in washes and shampoos.

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 preferring mild cleansers for daily routines.
People with known allergies to ethoxylated alcohols.
Users of lotions and creams seeking even blending of ingredients.
Those preferring completely natural or preservative-free products.
Those with normal to oily skin types due to non-comedogenic nature.
Users sensitive to any surfactants, regardless of mild rating.

Safety Notes

  • Rated low hazard by independent safety assessments.
  • Non-comedogenic, unlikely to clog pores.

Frequently Asked Questions about C12-16 Pareth-9

What does C12-16 Pareth-9 do in products?

It acts as a surfactant to cleanse and an emulsifier to blend oil and water phases stably.

Is C12-16 Pareth-9 safe for sensitive skin?

It carries a low hazard rating and mild profile suitable for many, but patch test if concerned.

Does it cause breakouts?

Rated non-comedogenic, so unlikely to contribute to pore clogging.