"Anti-ozone softener" likely refers to a product or treatment that is designed to prevent or mitigate the harmful effects of ozone on materials, particularly synthetic textiles such as clothing or upholstery. Ozone is a highly reactive gas that can cause damage to certain materials over time, particularly those made from synthetic fibers. An "anti-ozone softener" would likely contain chemical agents that can help to protect against this type of damage, either by reacting with the ozone itself or by providing a protective barrier that prevents the ozone from coming into contact with the material. These products are often used in industries where synthetic materials are exposed to high levels of ozone, such as in outdoor clothing or gear, or in the automotive industry.