Octyldodeceth-25

What is Octyldodeceth-25?

Octyldodeceth-25 is a synthetic nonionic surfactant produced by attaching 25 ethylene oxide molecules to a fatty alcohol blend of octanol and dodecanol, creating a balanced hydrophilic head and lipophilic tail. This amphiphilic structure excels in cosmetic rinse-off products like shampoos, body washes, facial cleansers, and micellar waters, as well as leave-on lotions and creams. It reduces surface tension between water and oils, enabling the formation of micelles that lift dirt, sebum, and residues for easy rinsing. In emulsions, it stabilizes oil droplets in water phases to prevent separation and maintain product consistency. As a solubilizer, it disperses water-insoluble fragrances, oils, and actives into clear aqueous solutions, ideal for toners, sprays, and serums. Its relatively high ethoxylation degree contributes to milder behavior compared to harsher ionic surfactants.

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:

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.
Solubilizing agent
Helps incorporate oils and fragrance into water-based formulas by forming micro-solutions, enabling clear sprays, toners, and micellar products.

Benefits

Delivers effective yet gentle cleansing by forming micelles that remove impurities without excessive drying.

Supports stable emulsions for smooth, consistent product textures.

Facilitates clear formulations by solubilizing oils and scents in water bases.

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 with oily or acne-prone skin needing thorough yet non-stripping cleansers.
Those with documented hypersensitivity to ethoxylated compounds.
People seeking foaming shampoos or body washes for daily routines.
People opting for entirely preservative- and surfactant-free natural products.
Individuals preferring lightweight toners and mists with incorporated fragrances.
Users experiencing irritation from any foaming cleansers, despite its mild profile.

Safety Notes

  • Low hazard rating from assessments, suitable for broad cosmetic applications.
  • Minimal irritation potential as a highly ethoxylated nonionic type.

Frequently Asked Questions about Octyldodeceth-25

What is the main function of Octyldodeceth-25?

It acts as a surfactant to cleanse by forming micelles, emulsifies oils in water, and solubilizes fragrances for clear formulas.

Is Octyldodeceth-25 suitable for everyday use?

Yes, its mild profile makes it appropriate for frequent rinse-off products like shampoos and facial washes.

Does Octyldodeceth-25 clog pores?

No, it has a comedogenic rating of 0, making it unlikely to contribute to pore blockage.