I have composite veneers over my front four teeth and I am looking to have them whitened (they have stained a little over the time I have had them on)
Are there any forms of whitening/ ingredients I should be staying clear of?
I wanted to complete a course of in-surgery lazer whitening but since having it done before I had my veneers put on, it has been made illegal.
Any advice on what would be the best way to bring my veneers/ teeth to their original colour?

Thank you