Laundry detergent sheets are a popular alternative to traditional detergents, containing polyvinyl alcohol (PVA), a water-soluble synthetic polymer. While PVA is biodegradable, concerns exist about its potential to contribute to microplastic pollution if not fully broken down in wastewater treatment. This article examines the science behind PVA, environmental impacts, consumer choices, and regulatory trends, helping readers understand the complexities of detergent sheets and microplastics.