Your good-looking felt hat is a fashion and financial investment. Proper care greatly increases the life and enjoyment of your western felt hat. Safe & effective for most fabrics & felts including wool and nylon. Excellent for use on black felt hats. Scout Felt Hat Rain & Stain Protector can be used on felt and beaver hats and keeps your hats water-repellent and stain-resistant. Can safely be used on all colorfast hat. Scout Felt Hat Cleaner foam penetrates, dissolves, and lifts out dirt out and brings back color.