Sodium Starch Octenylsuccinate

Sodium Starch Octenylsuccinate is a modified starch ingredient made from plant-derived starch that’s been processed to behave in a more cosmetic-friendly way. In skincare and haircare, it’s mainly used as an absorbent, texture-improving, and stabilizing ingredient. You’ll often find it in powders, lotions, sunscreens, foundations, dry shampoos, and other formulas where a smoother, less greasy feel is desired.

For skin, it can help soak up excess oil and reduce the tacky or heavy feel of a product, making finishes look more matte and elegant. In hair products, it can contribute to a lighter, cleaner feel and help improve slip or spreadability in some formulas. It’s especially useful for people with oily skin, combination skin, or anyone who prefers a soft-focus, less shiny finish.

Caveat: Sodium Starch Octenylsuccinate is generally a support ingredient rather than an active treatment, so it won’t address concerns like acne, dryness, or hair damage on its own. As with any ingredient, very sensitive users may prefer to patch test a new product, but it’s widely used for its functional, cosmetic benefits.