Could you tell me ways to whiten teeth for a night?

The only immediate : Whitening method i know that whitens your teeth safely in a about an hour are the professional in office systems used by dentists. Hope this helps.

Teeth whitening: Over the counter whitening strips can be helpful, though they only cover the front 6 teeth and some people find them cumbersome. Custom made trays made by a dentist are more effective because they use a higher concentration of whitening solution than what is available over the counter. Avoid anything that requires a rinse with an acid "pre conditioner"-it will erode the enamel, make teeth painful.

Yes: There are some take home whitening which you wear your trys and the whitening gel at night. It calls nite white.

Whitening trays: Teeth whitening trays fabricated by dentist with whitening gels, frequency and use should be rx by dentist.