Will sodium hydroxide used for wool carpet harden?

Yes Because wool is strongly acidic, the wool carpet will become hard and yellow after washing with caustic soda, and it is difficult to change back to its original color. Wool carpet generally refers to the carpet made of wool as the main raw material, which is a high-grade product in carpet and is mostly used in high-grade hotels, hotels, reception rooms, villas, national venues and other high-grade places.