What Is Disodium Dihydroxyethyl Sulfosuccinylundecylenate?
Disodium Dihydroxyethyl Sulfosuccinylundecylenate is a water-soluble salt made from a modified form of undecylenic acid, a fatty acid originally derived from castor oil. Chemists combine this fatty acid with succinic anhydride and ethylene oxide, then neutralize the mixture with sodium hydroxide to create a mild surfactant that carries two sodium ions. The resulting molecule has both oil-loving and water-loving parts, which lets it lift dirt and excess sebum while rinsing away cleanly.
The ingredient appeared in personal care labs in the late 1990s when formulators were looking for gentler alternatives to traditional sulfates. Because it is less irritating than sodium lauryl sulfate and offers light antimicrobial power, it was quickly adopted by brands that focus on sensitive skin and eco-friendly cleansing products.
You will most often find Disodium Dihydroxyethyl Sulfosuccinylundecylenate in facial cleansers, micellar waters, sulfate-free shampoos, body washes, intimate washes, deodorizing foot sprays and purifying clay masks. It sometimes turns up in leave-on lotions aimed at breakout-prone skin due to its ability to curb surface bacteria.
Disodium Dihydroxyethyl Sulfosuccinylundecylenate’s Cosmetic Benefits/Uses
This multitasking ingredient supports a formula in several ways:
- Antimicrobial: Helps limit the growth of bacteria, yeast and mold on the skin which can reduce odor and support clearer looking skin
- Cleansing: Acts as a gentle surfactant that loosens dirt, oil and product buildup allowing them to be washed away without stripping the skin’s natural barrier
- Deodorant: Its ability to suppress odor-causing microbes makes it useful in deodorant sprays, foot products and freshening wipes
Who Can Use Disodium Dihydroxyethyl Sulfosuccinylundecylenate
This ingredient is generally suitable for all skin types. Its mild cleansing action works well for oily or combination skin because it lifts away excess sebum, yet it is gentle enough for dry or sensitive skin since it does not strip the natural barrier. People with very dry or compromised skin should still pair it with moisturizers to avoid any tight feeling that can come from frequent washing.
Disodium Dihydroxyethyl Sulfosuccinylundecylenate is plant derived and synthesized without animal components which makes it appropriate for vegans and vegetarians. As always check the finished product for any animal based additives or animal testing policies.
Current safety data show no known risks for pregnant or breastfeeding women when the ingredient is used topically at cosmetic levels. This is not medical advice and anyone who is pregnant or nursing should review all personal care products with a qualified doctor before use to be extra safe.
The ingredient does not increase photosensitivity so it will not make skin more prone to sunburn. It is also odorless and non reactive with common actives such as vitamin C or niacinamide, allowing it to fit into most routines without issue.
Potential Side Effects/Adverse Reactions
Side effects and reactions to Disodium Dihydroxyethyl Sulfosuccinylundecylenate can vary from person to person. The following is a list of potential issues that may occur, but they are uncommon in products that have been properly formulated and used as directed.
- Mild skin irritation Some users may notice redness or a stinging sensation, especially if the formula sits on the skin for a long time before rinsing
- Dryness or tightness Over cleansing or using very hot water can strip natural oils and lead to a dry feel
- Allergic contact dermatitis A rare immune response could cause itching, swelling or rash in individuals who are allergic to the molecule
- Eye irritation If the ingredient enters the eyes it can cause temporary burning and watering
If any negative side effect occurs stop using the product and seek advice from a healthcare professional or pharmacist.
Comedogenic Rating
Rating: 0 (non-comedogenic)
Disodium Dihydroxyethyl Sulfosuccinylundecylenate is a fully water-soluble surfactant that rinses away without leaving a greasy film. It has no occlusive or heavy oil phase so it does not block pores or trap dead skin cells. Most formulas that use it are rinse-off cleansers which further lowers any chance of buildup.
Because of this, the ingredient is considered suitable for people who are prone to acne or frequent breakouts.
If combined with very rich emollients in a leave-on product the overall formula, not this ingredient alone, could still feel heavy on oily skin.
Summary
Disodium Dihydroxyethyl Sulfosuccinylundecylenate works as a gentle cleanser, light antimicrobial and deodorizing agent. Its dual water-loving and oil-loving structure lifts dirt and excess sebum then carries them away with water while its sulfonate group helps curb odor-causing microbes.
The ingredient shows up most often in sulfate-free face washes, body washes and freshening sprays. It is appreciated in sensitive skin lines yet remains a bit of a niche choice compared to big surfactants like coco-glucoside or SLES.
Current safety reviews rate it as low risk with only rare reports of irritation. Still, skin is personal so it is wise to patch test any new product that contains it just to be safe.