Porcelain veneers are thin, tooth-shaped shells that are bonded on top of your biological teeth to hide flaws like chips and cracks. They’re often made of porcelain, which shares a number of optical qualities with biological tooth enamel, giving these devices a remarkably lifelike appearance. A certain type of veneers, known as Lumineers, are so thin that they don’t even require your biological teeth to be altered. They can be designed and placed on your teeth in a matter of weeks, so that you can improve your smile dramatically with minimal investment of your time.