Sodium Dihydroxycetyl Phosphate
What is Sodium Dihydroxycetyl Phosphate?
Sodium dihydroxycetyl phosphate is a synthetic anionic surfactant consisting of a sodium salt derived from cetyl alcohol—a long-chain fatty alcohol typically obtained from coconut or palm kernel oils—and phosphoric acid. Chemically, it features a polar phosphate group attached to a dihydroxy-modified cetyl chain, providing both hydrophilic and lipophilic properties. This structure allows it to effectively lower surface tension between oil and water phases. Commonly found in rinse-off cleansers, shampoos, body washes, and emulsified leave-on products like lotions and creams. In formulations, it functions by solubilizing oils and dirt for easy rinsing, while forming protective films at interfaces to prevent phase separation, ensuring product stability and smooth texture during application and storage.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Benefits
Gently removes dirt and excess oils without harsh stripping.
Supports creation of stable emulsions for even product consistency.
Contributes to foaming in cleansers for satisfying lather.
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 sensitive skin seeking mild cleansing options. | Those with rare phosphate sensitivities or allergies. |
| Users of lotions and creams desiring smooth, non-separating textures. | Individuals experiencing irritation from similar surfactants. |
| People prone to clogged pores, given its non-comedogenic profile. | People preferring completely natural or phosphate-free ingredients. |
Safety Notes
- Considered low hazard in cosmetic concentrations by safety assessments.
- Non-comedogenic, unlikely to contribute to pore blockages.
Frequently Asked Questions about Sodium Dihydroxycetyl Phosphate
What does sodium dihydroxycetyl phosphate do in products?
It acts as a surfactant to cleanse by reducing surface tension and as an emulsifier to mix oils and water stably.
Is it suitable for sensitive skin?
Yes, its mild profile makes it common in gentle cleansers and emulsions for everyday use.
Does it clog pores?
No, it has a comedogenic rating of zero, supporting clear skin formulations.