Stearamine Oxide

What is Stearamine Oxide?

Stearamine oxide is a synthetic, nonionic surfactant derived from stearic acid, a common fatty acid, combined with dimethylamine and oxidized to form an amine oxide structure. This gives it versatile properties in rinse-off personal care products like shampoos, conditioners, and cleansers. It functions by reducing surface tension to remove dirt and oils effectively while boosting foam volume and stability for a luxurious lather. As a hydrotrope, it helps dissolve other ingredients, preventing cloudiness. In hair products, it reduces static and friction, improving smoothness and manageability without residue buildup. Its mild nature makes it suitable for frequent-use formulations, often paired with anionic surfactants to balance cleansing power and gentleness.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →
PubChem View on PubChem →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Hair conditioning
Improves softness, shine, and manageability by reducing friction and static; commonly achieved with cationic agents, silicones, oils, or conditioning polymers.
Surfactant
Lowers surface tension to enable cleansing, emulsifying, and foaming; central to shampoos, body washes, and many emulsions and micellar systems.
Cleansing agent
Removes dirt, oil, and impurities by lowering surface tension and forming micelles, enabling soils to be lifted and rinsed away from skin, hair, or teeth.
Foam booster
Enhances foam volume and creaminess and can stabilize lather, improving sensory feel and perceived cleansing in shampoos and wash-off products.
Hydrotrope
Improves solubility of poorly soluble ingredients (like fragrances) in water-based systems, helping maintain clarity and prevent separation or cloudiness.
Antistatic agent
Reduces static electricity and flyaways by improving surface conductivity, enhancing hair manageability and smoothness in conditioners and styling products.

Benefits

Boosts foam for a creamy, stable lather in washes.

Conditions hair by reducing static and improving shine.

Gently cleanses while solubilizing other formula components.

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 seeking foam-rich, conditioning shampoos.
Those with known allergies to amine oxides.
People with normal to dry hair needing antistatic effects.
People highly sensitive to surfactants in eye area.
Users of mild, everyday cleansers for body or scalp.
Individuals preferring completely natural, preservative-free products.

Safety Notes

  • Considered low hazard in cosmetic concentrations by safety reviews.
  • Typically non-comedogenic and suitable for rinse-off use.

Frequently Asked Questions about Stearamine Oxide

What products contain stearamine oxide?

Commonly found in shampoos, body washes, and conditioners for cleansing and foam enhancement.

Is stearamine oxide safe for sensitive skin?

Safety assessments indicate low irritation potential in typical rinse-off cosmetic uses.

Does it help with hair static?

Yes, it reduces static electricity, improving hair manageability and smoothness.