Oleth-5 Phosphate
What is Oleth-5 Phosphate?
Oleth-5 Phosphate is a phosphate ester derived from oleyl alcohol, a long-chain fatty alcohol typically obtained from vegetable oils such as olive or palm. This ingredient undergoes ethoxylation, where ethylene oxide units are added to enhance water solubility, followed by phosphorylation to introduce anionic properties. It belongs to the class of alkyl ether phosphates commonly used in personal care formulations. In cleansing products like shampoos, body washes, and facial cleansers, it reduces surface tension to lift away oils, dirt, and impurities while generating stable foam. For emulsions such as creams and lotions, it forms a protective film at the oil-water interface, preventing phase separation and promoting even distribution of active components. Its balanced hydrophilic-lipophilic properties make it effective across a range of pH levels in rinse-off and leave-on cosmetics.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Benefits
Delivers gentle surface tension reduction for effective dirt and oil removal in washes.
Supports stable oil-water mixing to maintain smooth textures in lotions and creams.
Contributes to consistent foaming without stripping skin's natural moisture barrier.
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 using daily cleansers who want mild foaming action. | Those with rare allergies to ethoxylated phosphates. |
| Individuals with normal or oily skin preferring non-comedogenic surfactants. | People sensitive to anionic surfactants in high concentrations. |
| Users of emulsified moisturizers seeking reliable product stability. | Individuals avoiding synthetic emulsifiers altogether. |
Safety Notes
- Considered low hazard with minimal irritation in cosmetic applications.
- Non-comedogenic, suitable for formulations targeting blemish-prone skin.
Frequently Asked Questions about Oleth-5 Phosphate
What does Oleth-5 Phosphate do in products?
It acts as a surfactant to cleanse and foam, and as an emulsifier to blend oils and water stably.
Is Oleth-5 Phosphate irritating?
Evidence indicates low irritation potential in typical cosmetic uses.
Can it suit acne-prone skin?
Its comedogenic rating of 0 suggests it does not clog pores.