How effective is professional teeth whitening?

Professional whitening uses the most potent amount of hydrogen peroxide activated even more by high-intensity light wavelengths to bleach deeper and more easily. An in-office whitening procedure costs anywhere between $500 to $1200, and it can safely lighten teeth up to 12 shades. Unfortunately, that 12-shades-brighter brilliance is usually short-lived.

After about three to six months, a majority of the whitening naturally starts to regress.

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