PCA is graded A (Safe) by Expert·ING, based on COSING, FDA regulatory data.

PCA

Safety grade: A

PCA is a naturally occurring amino acid derivative found in skin that acts like a sponge, drawing moisture from the air and deeper skin layers to keep the surface hydrated. It's one of your skin's own natural moisturizing factors.

PCA is used in skincare products to attract and bind water to the skin, providing deep hydration and helping to maintain skin's natural moisture balance and softness.

Graded using: COSING, FDA.

Last verified: May 26, 2026