C12-13 Pareth-3

What is C12-13 Pareth-3?

C12-13 Pareth-3 is a synthetic non-ionic surfactant produced by reacting a blend of dodecanol (C12) and tridecanol (C13) fatty alcohols with three molecules of ethylene oxide. This ethoxylation process yields a hydrophilic molecule effective at bridging oil and water. Primarily used in rinse-off products like shampoos, body washes, facial cleansers, and some leave-on emulsions such as lotions and creams. It functions by lowering interfacial tension, which disperses oils and soils for easy rinsing during cleansing. In formulations, it also forms micellar structures to solubilize fragrances or oils and acts as a co-emulsifier to maintain product homogeneity by creating a protective film around droplets. Its short polyethylene glycol chain contributes to milder behavior versus longer-chain ethoxylates, supporting clear, stable cosmetic systems.

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

Gentle cleansing action removes impurities without harshness.

Stabilizes oil-in-water emulsions for smooth product textures.

Supports foaming in washes while remaining non-comedogenic.

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 daily cleansers needing mild surfactant action.
Those allergic to ethoxylated alcohols or polyethylene glycols.
Individuals with oily or combination skin for non-pore-clogging formulas.
Preferers of fully natural, surfactant-free products.
People incorporating emulsion-based moisturizers or lotions.
Individuals with extreme sensitivity seeking zero synthetic emulsifiers.

Safety Notes

  • Low hazard rating from environmental health assessments.
  • Deemed safe for cosmetic use in typical concentrations by expert reviews.

Frequently Asked Questions about C12-13 Pareth-3

What does C12-13 Pareth-3 do in products?

It cleanses by reducing surface tension to lift dirt and stabilizes water-oil mixtures for even textures.

Is C12-13 Pareth-3 comedogenic?

It carries a zero comedogenic rating, making it unlikely to clog pores.

How mild is C12-13 Pareth-3 for skin?

As a short-chain non-ionic surfactant, it supports gentle cleansing suitable for many skin types.