Sodium Dodecylbenzenesulfonate

What is Sodium Dodecylbenzenesulfonate?

Sodium Dodecylbenzenesulfonate is a synthetic anionic surfactant derived from the sulfonation of dodecylbenzene, followed by neutralization with sodium hydroxide. This creates a compound with a hydrophobic linear alkyl chain and a hydrophilic sulfonate group, making it effective in aqueous systems. Commonly found in rinse-off personal care products such as shampoos, shower gels, facial cleansers, and liquid soaps, it primarily functions by reducing water's surface tension to penetrate and lift away grease, sebum, and residues. It forms micelles that trap impurities for easy rinsing and generates foam for better application coverage. As an emulsifier, it stabilizes oil-in-water mixtures, ensuring uniform consistency in formulations. Its linear structure enhances solubility and rinseability, distinguishing it from harsher branched alternatives used in some detergents.

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:

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.
Emulsifying agent
Enables stable mixing of oil and water phases by forming an interfacial film, helping create lotions, creams, and cleansers with consistent texture.

Benefits

Delivers thorough cleansing by solubilizing oils and dirt into rinsable micelles.

Produces abundant foam for an enjoyable washing experience.

Supports stable emulsions, creating smooth textures in cleansers and lotions.

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 oily skin needing effective dirt and oil removal.
Those with highly reactive skin to anionic surfactants.
Users of foaming cleansers and shampoos seeking good lather.
Individuals seeking completely natural or preservative-free formulas.
People preferring non-comedogenic ingredients in rinse-off products.
People experiencing dryness from frequent surfactant exposure.

Safety Notes

  • Well-tolerated at typical cosmetic levels in rinse-off applications.
  • Low potential for comedogenicity, suitable for acne-prone skin.

Frequently Asked Questions about Sodium Dodecylbenzenesulfonate

What does sodium dodecylbenzenesulfonate do in products?

It lowers surface tension to cleanse dirt and oils, creates foam, and stabilizes emulsions for better texture.

Is it suitable for sensitive skin?

Generally mild in rinse-off products, but those with surfactant sensitivity may prefer gentler options.

Does it cause acne?

No, it has a comedogenic rating of zero, making it unlikely to clog pores.