Using teeth whitening system or kit is an alternative method for professional teeth whitening. Generally teeth whitening systems comprises of whitening gel. It is placed in mouthpieces that fit over your teeth for different amount of time.
Some teeth whitening products have been granted their seal of approval by The American Dental Association so kindly make sure that the product which you are buying has ADA mark of approval. Following of manufacturer directions is really important when using whitening kit at home. Whitening products must not be used for more than 14 days without the consut of dental professional.