Decyl Glucoside

Decyl glucoside is a non-ionic sugar-derived surfactant used primarily as a cleanser/foaming agent, often around ~1–10% (and higher in some wash-off formulas), where its main risk is surfactant-related barrier disruption rather than true allergy. Clinical and consumer patch/usage data generally place alkyl glucosides as milder than sulfates, but they can still cause stinging, redness, and eczema flares—especially on compromised skin or with frequent cleansing—so for highly sensitive populations it warrants a moderate irritancy score and patch testing. Safety Notes: In commercial products, decyl glucoside appears at very low levels (~0.1–1%) as a secondary/nonionic solubilizer or co-surfactant in micellar waters, toner-like cleansers, and some emulsified products where mild foam boosting or solubilization is needed. Typical rinse-off facial/body cleansers and baby washes commonly use it in the ~2–10% active range, while high-foaming “natural” shampoos, shower gels, and concentrated surfactant bases sold to consumers can reach ~15–25% as a primary surfactant (higher is usually limited by viscosity, clarity, and irritation). It is predominantly a rinse-off ingredient; leave-on use is generally kept low to minimize tack/film and irritation potential.