Primer is a type of paint that is used as a preparatory coat applied to surfaces before painting with the final or topcoat. The primary functions of primer include: 1. **Improving Adhesion**: Primer helps paint adhere better to the surface, preventing peeling or chipping over time. 2. **Sealing the Surface**: It can seal porous surfaces (like wood or drywall), preventing the topcoat from being absorbed unevenly. This results in a more uniform finish.
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