Primers create a base layer that improves the adhesion of paint to porous surfaces, while sealers create a protective finish that protects the paint from wear and tear.

Consider the surface you're painting, the type of paint you're using, and the desired finish. A knowledgeable customer service team or paint professional can also assist you in selecting the most suitable primer.

Proper surface preparation is crucial. Ensure the surface is clean, dry, and free of debris. Apply a thin, even coat of primer or sealer using a brush, roller, or spray gun, and allow it to dry completely before applying subsequent coats.

Drying time varies depending on the product and environmental conditions. Refer to the manufacturer's instructions for specific time frames, which typically range from a few hours to overnight.