As long as it takes to get the results you desire. This is usually 3-6 weeks; your dentist will assess the time required. Sometimes longer is required for stubborn stains, you simply stop when you are happy with the result.
As long as it takes to get the results you desire. This is usually 3-6 weeks; your dentist will assess the time required. Sometimes longer is required for stubborn stains, you simply stop when you are happy with the result.