I purchased this for caps that can't be washed, but I'm selling it now because I no longer use it. Here's the product description: Purchase date: March 2025 Retail price: 3,300 yen Manufacturer's product number: EFNALcare Efcr003 Acidity: Neutral Contents: 150ml (approx. 200 sprays) Made in Japan Premium waterless cleaner EFNAL's cap and hat cleaner, Efcr003. The area of the body that sweats the most is the forehead. Wearing a hat makes it easier to get stuffy, which increases the amount of sweat. As sweat increases, so does sebum. In other words, the food source for resident bacteria increases, making it easier for odor-causing substances to be produced. However, hats are items that are washed far less frequently than clothing. It's important not to let dirt accumulate before odors or yellowing occur. The "brim" area that touches the forehead is easily soiled by sweat, sebum, sunscreen, and foundation, and keeping this area clean makes a big difference. How EFNALcare works To remove dirt by wiping the fabric surface, the formula is [neutral] to minimize damage to the fabric, and highly volatile ingredients are added to ensure that the ingredients do not remain. Other detergents, and of course, even in the case of dry cleaning, there is no such thing as no damage to the fabric, but at least by using EFNALcare, the damage is minimized, and the original purpose of cleaning is achieved in a balanced formulation.