After using the product, will the surface of the bathtub become slippery? Using the product will not make the surface of the bathtub slippery. In addition, special anti-slip coatings can be used to prevent the surface of the bathtub from becoming slippery. How durable is the product? Is it prone to peeling? This product is highly durable and won't peel off easily after application. To maintain its durability, clean the bathtub surface and remove residue or grease before use. Avoid abrasive cleaners after use and perform regular cleaning and maintenance. Is the product suitable for aged bathtubs that have been used for many years? This product is compatible with most bathtubs, but it may not be able to repair seriously damaged or cracked surfaces. Prior to use, it is important to thoroughly inspect the bathtub surface and make any necessary repairs or replacements. Is the product suitable for bathroom floor tiles or other surfaces? The product can be used on bathroom floor tiles, but it is not recommended to use it on vertical walls. What materials of bathtubs can this product be used on? The product is suitable for a variety of bathtub materials, including cast iron, steel, ceramic, acrylic, and fiberglass bathtubs.