N-HYDROXYPENTADECANOYL PHYTOSPHINGOSINE is graded A (Safe) by Expert·ING, based on COSING regulatory data.

N-HYDROXYPENTADECANOYL PHYTOSPHINGOSINE

Safety grade: A

This plant-derived ingredient works to strengthen and protect your skin's natural barrier. It helps lock in moisture and keeps skin feeling soft and smooth. You'll typically find it in moisturizers and serums designed to soothe and hydrate sensitive or compromised skin.

Graded using: COSING.

Last verified: June 9, 2026