Potassium persulfate is widely used as an oxidizing agent in various industrial and chemical processes. It is commonly employed in the polymerization of certain plastics and resins, where it acts as an initiator to start the polymerization reaction. This makes it valuable in the production of materials like polystyrene and polyacrylates.

In the electronics industry, it is used for etching printed circuit boards (PCBs) to remove unwanted copper and create precise circuit patterns. Its strong oxidizing properties make it effective for this purpose.

It is also utilized in hair bleaching products and cosmetics, where it helps to lighten hair by breaking down melanin pigments. Additionally, potassium persulfate is used in environmental applications, such as soil and groundwater remediation, to oxidize and break down contaminants like hydrocarbons and other organic pollutants.

In the textile industry, it serves as a bleaching agent for fabrics, ensuring bright and clean colors. Its versatility and strong oxidizing capabilities make it a key component in various chemical processes across multiple industries.