Myreth-3 Myristate

What is Myreth-3 Myristate?

Myreth-3 Myristate is a synthetic nonionic surfactant and emollient created by ethoxylating myristyl alcohol with three units of ethylene oxide and esterifying with myristic acid, both derived from natural fatty acids like those in palm or coconut oil. It appears in cosmetic categories such as moisturizers, cleansers, and lotions. Functionally, it lowers surface tension between oil and water, enabling stable emulsions that blend disparate phases smoothly. As an emollient, it coats the skin to reduce friction, promoting a silky feel and facilitating even application of other ingredients. Its skin-conditioning role supports surface suppleness without heavy occlusion. In formulations, it enhances spreadability and mild cleansing, making it versatile for both rinse-off and leave-on items across personal care products.

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:

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.

Surfactant

Lowers surface tension to enable cleansing, emulsifying, and foaming; central to shampoos, body washes, and many emulsions and micellar systems.

Benefits

Provides a softening effect on skin surface for improved smoothness.

Supports skin conditioning to enhance flexibility and comfort.

Facilitates emulsification for better product stability and texture.

Who It's For

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

Who May Benefit	Who Should Avoid
People with dry skin seeking added softness.	Those with oily skin due to emollient properties.
Individuals wanting smoother application in lotions and creams.	People preferring lightweight, non-greasy textures.
Users of conditioning cleansers for gentle formulation.	Individuals sensitive to rich emollient feel on skin.

Safety Notes

Considered safe for use in cosmetics based on regulatory assessments.
Low hazard potential with minimal irritation concerns at typical levels.

Frequently Asked Questions about Myreth-3 Myristate

What does Myreth-3 Myristate do in products?

Acts as emollient to soften skin, skin conditioner for smoothness, and surfactant for emulsifying and cleansing.

Is it safe for daily use?

Rated low hazard and safe in cosmetics per evidence-based reviews.

Suitable for oily skin?

Not ideal due to emollient nature; better for dry skin types.