What Is Sodium Hydroxypropylphosphate Decylglucoside Crosspolymer?
Sodium Hydroxypropylphosphate Decylglucoside Crosspolymer is a plant derived surfactant made by linking the gentle sugar cleanser decyl glucoside with small phosphate-containing molecules to form a larger three-dimensional network. Manufacturers start with glucose from corn or other renewable crops, attach it to a decyl (ten-carbon) fatty alcohol sourced from coconut or palm, then react this decyl glucoside with 1,3-dichloro-2-propanol. A second step with bis(3-chloro-2-hydroxypropyl)phosphate introduces phosphate groups that crosslink the chains. The result is a water-soluble polymer that is milder on skin than many traditional sulfates yet still provides rich foam and good cleansing power.
The ingredient emerged in the early 2000s as formulators searched for sulfate-free alternatives that lather well but cause less irritation. Its sugar and coconut origins make it attractive for brands focused on naturally inspired or eco-friendly positioning. Because the polymer stays on the surface instead of penetrating deeply, it works in a wide pH range and pairs well with other actives.
You will most often see Sodium Hydroxypropylphosphate Decylglucoside Crosspolymer in face and body washes, micellar waters, foaming cleansers, shampoos, bubble baths, makeup removers, sheet mask essences and even some lightweight moisturizers where a touch of foam or improved rinse-off is desired.
Sodium Hydroxypropylphosphate Decylglucoside Crosspolymer’s Cosmetic Benefits/Uses
This multitasking polymer improves both the feel and performance of many rinse-off and leave-on products.
- Cleansing: Lifts away dirt, oil and makeup while staying gentle on skin and hair which helps reduce dryness or tightness after washing
- Emulsifying: Keeps water and oil phases blended so formulas stay uniform and stable over time improving texture and shelf life
- Foam Boosting: Enhances the quantity and creaminess of lather giving users the sensory cue that a product is working effectively
- Hydrotrope: Helps dissolve otherwise difficult ingredients into water allowing higher concentrations of fragrances or oily actives without cloudiness or separation
Who Can Use Sodium Hydroxypropylphosphate Decylglucoside Crosspolymer
Because it is a mild sugar and coconut based surfactant, Sodium Hydroxypropylphosphate Decylglucoside Crosspolymer is generally well tolerated by all skin types including oily, dry, combination and even sensitive skin. It is unlikely to disrupt the skin barrier or strip natural oils which makes it a good choice for people who struggle with tightness after cleansing.
The ingredient is plant derived and produced without animal by-products so it is suitable for vegans and vegetarians. Its manufacture does not rely on animal testing in most major markets though shoppers should still look for cruelty free certification from the finished brand if that is important to them.
No specific issues have been reported for women who are pregnant or breastfeeding. Current safety assessments show low absorption through the skin and no known hormonal activity. This is not medical advice and anyone who is expecting or nursing should still ask a healthcare professional before starting any new skincare product just to be safe.
Sodium Hydroxypropylphosphate Decylglucoside Crosspolymer does not make skin more sensitive to sunlight so there is no extra need for photoprotection beyond a regular daily sunscreen. It is also considered safe for color treated hair and for use around the eyes at appropriate concentrations.
Potential Side Effects/Adverse Reactions
Side effects and reactions to topical Sodium Hydroxypropylphosphate Decylglucoside Crosspolymer can vary from person to person. The following is a list of potential side effects however most users will not experience any problems when the ingredient is formulated and used correctly.
- Mild skin irritation or redness in very sensitive individuals
- Transient stinging if the product accidentally gets into the eyes
- Rare allergic contact dermatitis for people with a specific sensitivity to glucoside or phosphate derivatives
- Dryness if used in a high concentration without adequate moisturizers in the same formula
If you notice persistent discomfort, redness or any unusual reaction while using a product that contains this ingredient discontinue use and consult a qualified healthcare provider.
Comedogenic Rating
Rating: 0-1 (essentially non comedogenic)
Sodium Hydroxypropylphosphate Decylglucoside Crosspolymer is a large, water-soluble molecule that sits on the surface and rinses away easily rather than settling inside pores. It contains no greasy fatty acids or waxes that might clog follicles which is why the chance of it triggering blackheads or pimples is extremely low. Because most formulas use it at modest levels, often in wash-off products, any residue left behind is minimal.
Suitable for acne-prone or breakout-prone skin.
Its low molecular weight fragments are tightly bound into the crosslinked structure so they do not migrate into pores. If breakouts do occur they are more likely due to other richer ingredients in the same product rather than this surfactant itself.
Summary
Sodium Hydroxypropylphosphate Decylglucoside Crosspolymer works as a gentle cleanser, emulsifier, foam booster and hydrotrope. The sugar-based decyl glucoside portion lifts dirt while staying mild, the phosphate crosslinks create a flexible network that thickens and stabilizes the formula, the polymeric nature traps air for a creamier lather and its hydrotropic action keeps oils and fragrances evenly dispersed.
It is not as famous as classic sulfates or newer amino acid surfactants yet its presence is steadily rising in sulfate-free shampoos, micellar waters and facial cleansers thanks to its plant origin, mildness and reliable foaming profile.
Current safety data shows very low irritation, no known hormonal activity and negligible comedogenicity so overall it is considered safe for most users. As with any new skincare ingredient it is wise to perform a simple patch test when trying a product that contains it just to make sure your individual skin agrees.