For car detailing, the type of clay commonly used is known as a clay bar. This is a putty-like substance designed to remove bonded contaminants from a vehicle's painted and glass surfaces.

Here are some key points about detailing clay:

1. Composition: Detailing clay bars can be made from various materials, including synthetic compounds and natural clays. They often contain abrasives like aluminum oxide, along with polymers and other additives that enhance their effectiveness.

2. Types of Clay Bars: There are different grades of clay bars available:

Fine Grade: Suitable for regular maintenance and gentle on the paint.

Medium Grade: More aggressive, used for removing tougher contaminants.

Heavy Grade: Best for severe contamination, but can be too harsh for clear coats.

1. Usage: To use a clay bar, you typically need a lubricant (like a detailing spray) to prevent scratching the surface. The clay is rubbed back and forth over the lubricated area, effectively lifting contaminants like overspray, rail dust, and brake dust.

2. Benefits: Using a clay bar makes the car's surface feel smooth and prepares it for waxing or sealing, as it removes roughness that can hinder the bonding of these products.

Here are some images of clay bars used in car detailing:

In summary, a clay bar is an essential tool in car detailing, helping to achieve a clean and smooth surface before applying protective coatings.