Oleoyl Sarcosine

What is Oleoyl Sarcosine?

Oleoyl Sarcosine is a synthetic anionic surfactant formed by acylating sarcosine—a simple amino acid derivative known as N-methylglycine—with oleic acid, a long-chain unsaturated fatty acid often derived from plant oils like olive or sunflower. This structure provides amphiphilic properties, with a polar head group for water interaction and a hydrophobic tail for oil solubility, making it suitable for rinse-off hair care products such as shampoos, conditioners, and styling aids. In formulations, it lowers surface tension to enable dirt and sebum removal through micelle formation, while its fatty chain deposits on hair shafts to smooth cuticles, enhance slip, reduce friction, and neutralize static charges during combing or styling. Its balanced mildness supports foaming without excessive drying, fitting modern gentle cleansing systems.

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.
Antistatic agent
Reduces static electricity and flyaways by improving surface conductivity, enhancing hair manageability and smoothness in conditioners and styling products.

Benefits

Gentle cleansing action removes buildup while preserving hair's natural moisture.

Enhances hair softness, shine, and ease of styling by smoothing the surface.

Controls static electricity for smoother detangling and reduced flyaways.

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 normal to dry hair seeking mild daily cleansing.
Those with rare allergies to sarcosine derivatives or fatty acid amides.
People looking for conditioning effects in shampoos without heavy residues.
People preferring completely non-surfactant based hair cleansers.
Users of hair products needing antistatic properties for manageable styles.
Individuals sensitive to any anionic surfactants, despite its mild profile.

Safety Notes

  • Considered low hazard in cosmetic concentrations by safety assessments.
  • Suitable for typical rinse-off use with minimal absorption concerns.

Frequently Asked Questions about Oleoyl Sarcosine

What is Oleoyl Sarcosine used for?

Primarily in hair products as a surfactant for cleansing, conditioning, and static control.

Is it safe for sensitive scalps?

Generally mild with low irritation potential in rinse-off formulas.

Does it cause comedones?

Non-comedogenic rating indicates low risk for pore clogging.