It depends on the product. In-office teeth whitening treatments tend to be more powerful and can lighten teeth up to eight shades in a single treatment. However, they can also be more expensive and are not always covered by dental insurance plans.

At-home teeth whitening products are typically less powerful than in-office treatments, but they are also much cheaper and can be used at home without having to visit a dentist. Most at-home whitening products use peroxide or other bleaching agents to remove stains from teeth, and they generally produce good results when used correctly.

Porcelain veneers are a permanent solution, but they may not be the best solution for everyone. Veneers are thin sheets of porcelain that are glued to the front of your teeth. They can improve the appearance of your teeth by hiding cracks, gaps, and discoloration.

However, veneers are not always the best option for repairing teeth. They can be more expensive than other treatments and they require more preparation time. If you're not happy with the way your veneers look, you may need to have them replaced.

Porcelain veneers can last anywhere from 5 to 10 years, but they may not be the best option for everyone.

Porcelain veneers are a popular choice for people who want to improve their smile, but they aren't the right solution for everyone. They can last anywhere from 5 to 10 years, but they require a lot of maintenance and may not be the best option if you have a history of tooth decay or gum disease.

If you're interested in getting porcelain veneers, it's important to visit a dentist for a consultation. They will be able to examine your teeth and determine if porcelain veneers are the right solution for you.