Soyamide Dea

What is Soyamide Dea?

Soyamide DEA is the diethanolamide formed from soybean oil fatty acids and diethanolamine, creating a non-ionic surfactant valued in rinse-off cosmetics like shampoos, conditioners, and body cleansers. Derived from renewable soy sources, it works by aligning its lipophilic fatty chains toward oils and hydrophilic ethanolamide heads toward water, effectively bridging phases. This enables dirt and oil removal during cleansing, generates stable bubbles for luxurious lather, thickens formulations for smooth application, blends immiscible ingredients into uniform mixtures, and reinforces emulsion structures against breakdown. Primarily featured in hair and body care, it supports mild yet efficient performance without leaving residues on skin or hair.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1-3 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.
Foam booster
Enhances foam volume and creaminess and can stabilize lather, improving sensory feel and perceived cleansing in shampoos and wash-off products.
Viscosity controlling agent
Adjusts thickness to the desired level for stability and usability, improving dispensing, suspension, and texture across many formulation types.
Emulsifying agent
Enables stable mixing of oil and water phases by forming an interfacial film, helping create lotions, creams, and cleansers with consistent texture.
Emulsion stabilizer
Improves emulsion robustness by preventing droplet coalescence and phase separation, often by thickening, structuring, or strengthening the interfacial layer.

Benefits

Delivers thorough cleansing by reducing surface tension to lift away impurities.

Creates rich, stable foam that enhances the washing experience.

Supports even texture and lasting emulsion integrity in formulas.

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 shampoos and body washes seeking creamy lather.
People with sensitivity to amide surfactants.
Individuals preferring plant-based surfactants in rinse-off items.
Individuals concerned about potential impurities in DEA compounds.
Those wanting stable, easy-to-use cleansing products.
Those preferring strictly preservative-free or minimal-ingredient routines.

Safety Notes

  • Rated low to moderate concern by hazard assessments, with zero comedogenic potential.
  • Formulators monitor for contaminants to ensure product purity.

Frequently Asked Questions about Soyamide Dea

What is Soyamide DEA made from?

It derives from soybean fatty acids reacted with diethanolamine, forming a versatile surfactant.

Is it suitable for sensitive skin?

It shows low irritation potential but patch testing advised for sensitivities.

What products commonly contain it?

Found in shampoos, body washes, and other rinse-off cleansers for foam and stability.