Will not change the tone, texture or color of felt hats. Use on hats (straw, felt, and fabric), saddles, tack, boots, chaps, and apparel. Non-silicone based product repels dirt while preventing staining and discoloration. Will not affect any future cleanings or reblocking done to the hat by professionals. Coats the fibers of the felt hat or material allowing it to be water and stain repellent without affecting breathability.