Clay towels, often used in automotive detailing, are designed to be reusable and can last for a significant amount of time with proper care. Here are some key points regarding their longevity:

1. Reusability: Clay towels can typically be used repeatedly, with some sources indicating they can last for up to 50 uses on different vehicles, depending on the level of contamination and how well they are maintained.

2. Comparison to Clay Bars: In contrast to traditional clay bars, which may only be effective for two to three cars, clay towels offer a more efficient and longer-lasting option for detailing.

3. Maintenance: To extend the life of a clay towel, it's important to clean it properly after each use. This involves rinsing off any contaminants and allowing it to dry before storage.

In summary, with proper care, clay towels can last for many detailing sessions, making them a practical choice for car enthusiasts and professionals alike. If you have any specific usage scenarios or further questions, feel free to ask!