There are several different types of paint on teeth whiteners. There are some that use carbamide peroxide and others that use hydrogen peroxide. Some are used during the day for a 30 minute treatment, and others are used overnight. You do have to avoid any kind of action like eating or touching the teeth to keep the whitener on for the full treatment. You must brush your teeth to remove the product after the treatment is done.
Paint-on teeth whitening can be safely done in the privacy of your own home. It does not require a dentist appointment. This makes it a very economical way to whiten your teeth. It can be fit into your schedule, since you can choose when to do it and for how long.
Be sure to read the directions for any over-the-counter tooth-whitening product you buy. Prolonged use can cause damage to the enamel, and the directions will give you the appropriate guidelines to do it safely. These types of products are great for touch-ups when you’ve already received a professional whitening treatment at the dentist’s. They generally aren’t as effective as trays or laser whitening but are quite effective at maintaining a bright smile and thus prolonging that fresh-from-dentist look and feel with just a little additional cost and maintenance.