What product should be applied to prevent nail polish from chipping?

The most effective product to prevent nail polish from chipping is the top coat. A top coat is specifically designed to be applied over the nail polish to create a protective layer. This layer not only enhances the shine of the polish but also helps to lock in the color and provide a barrier against chipping, fading, and other forms of wear and tear.

On the other hand, a sealer is a product commonly used in different contexts, such as for sealing wood or other surfaces, and it does not specifically serve the purpose of maintaining nail polish. A base coat is applied prior to the nail polish to improve adhesion and protect the nails from staining, but it doesn’t offer the protective benefits against chipping that a top coat does. Nail oil, while beneficial for moisturizing and strengthening the nails and cuticles, does not provide a protective layer over the polish itself and is not intended to prevent chipping.

In summary, a top coat is essential for extending the life of your manicure and preventing chipping, making it the correct choice in this context.