Pullulan is a natural sugar polymer that's non-toxic, edible, and breaks down in the environment. The research confirms it works well as a delivery system in cosmetics—meaning it can help get active ingredients deeper into skin layers—and is already used in creams, lotions, sunscreen, and facial masks.

This is a literature review, not a new experiment. The authors surveyed existing research on pullulan's use in both pharmaceutical and cosmetic products to summarize what's already known.

Funding not disclosed in abstract