|
If you go to the dentist you can get a higher percentage of hydrogen peroxide which is stronger than what you get in the store, which means you can use less.
They can make your teeth sensitive and hurt, just depends on you. I do them about once a month or a few times sometimes but my teeth are really sensitive. If you have that problem too make sure to buy sensitive toothpaste. It really works and it will make your teeth not hurt anymore.
Cheapest way is through your dentist. I already have clear retainers so I just use those instead of getting the expensive ones from the dentist.
|