Laureth-4

Benefits
Softening

What is Laureth-4?

Laureth-4 is a synthetic nonionic surfactant produced by reacting lauryl alcohol, derived from coconut or palm kernel oil, with four moles of ethylene oxide. This ethoxylation process creates a molecule with both hydrophilic (water-loving) and lipophilic (oil-loving) properties, making it ideal for personal care formulations. Commonly found in shampoos, body washes, facial cleansers, lotions, and hair conditioners, it functions by reducing surface tension to facilitate dirt and oil removal during cleansing, stabilizing oil-in-water emulsions for smooth textures, neutralizing static in hair products for better manageability, and masking off-odors to improve sensory appeal. Its relatively short chain length contributes to mild performance compared to higher ethoxylates.

Comedogenic Rating 5/5 Higher risk of clogging pores
EWG Safety Rating 1-3 View on EWG →
PubChem View on PubChem →

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.
Antistatic agent
Reduces static electricity and flyaways by improving surface conductivity, enhancing hair manageability and smoothness in conditioners and styling products.
Masking
Reduces perception of unpleasant odors or tastes by neutralizing them or covering them with more acceptable sensory notes.

Benefits

Provides effective cleansing by removing dirt and excess oils without stripping moisture.

Helps create stable emulsions in creams and lotions for even application.

Softens skin and hair, improving texture and manageability.

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 normal skin seeking gentle cleansing products.
Those with oily skin due to high comedogenic rating.
People using shampoos or conditioners for smoother, static-free hair.
People prone to acne or clogged pores.
Users of lotions needing consistent, non-separating textures.
Individuals sensitive to ethoxylated surfactants.

Safety Notes

  • Rated low hazard by EWG (1-3), indicating minimal concerns in typical use.
  • Approved safe for cosmetics by regulatory reviews with no significant risks identified.

Frequently Asked Questions about Laureth-4

What is Laureth-4 used for in cosmetics?

It acts as a surfactant for cleansing, emulsifier for lotions, antistatic for hair, and masking agent for odors.

Is Laureth-4 safe for daily use?

Yes, with low hazard ratings from authoritative sources in typical cosmetic concentrations.

Does Laureth-4 clog pores?

It has a high comedogenic rating, making it less ideal for acne-prone or oily skin types.