Zinc PCA Best Humectant Hydration Zinc PCA at a glance Derived from zinc Contradictory research demonstrating it's ability to help acne-prone skin Has anti-aging benefits Zinc PCA description A synthetic skin-conditioning ingredient derived from zinc. Research has shown it has anti-ageing benefits due to its ability to thwart destructive enzymes in skin that can damage its surface and lead to an aged, wrinkled appearance. Related ingredients: PCA