Using toothpaste on car paint is generally not recommended. While some people suggest it for minor scratch removal due to its mild abrasive properties, toothpaste can still cause damage to your car’s finish. Here’s why:

1. Abrasiveness: Toothpaste can be too abrasive for clear coat finishes, potentially leading to micro-scratches or dulling the paint.

2. Ingredients: Many toothpaste formulations contain additives and chemicals that can harm car paint or strip away wax and sealants.

3. Uneven Application: It can be difficult to apply evenly, leading to further uneven wear on the surface.

For minor scratches, it’s better to use products specifically designed for automotive paint, such as scratch removers or polishes that are safe for car finishes. If you're unsure, consulting a professional detailer is a good option.