Bickmore Spot Remover for Hats comes in easy-to-use granules that are specifically designed to be worked into felt hats and absorb most stains including grease, finger marks, and rings. Simply sprinkle on and let the powder be absorbed by the stain, then just brush it away! It is ideal for all colors and types of hats and will not leave chemical residue. Always test a small, inconspicuous area when first using this product.