At-home teeth-whitening kits brightens smiles two to five shades with 30% carbamide peroxide during 15- to 30-minute daily treatments

A light-activated hydrogen peroxide gel dissolves stains to whiten teeth by up to eight shades

Three 20-minute whitening treatments performed in one visit brighten smiles by up to eight shades for up to two years

Dental trays loaded with peroxide-based gel work with an LED light to remove stains from smiles

Discolored teeth begin to brighten after being swabbed with whitening gel and basked beneath Sapphire plasma arc light

60-minute whitening treatment applies gel and activating light to teeth, fading stains from food, drinks, and tobacco

Lasers evaporate nail fungus over the course of one or three treatments

Organic whitening gel brightens smiles by up to eight shades during 60-minute in-office treatment

Nonabrasive gel coats dulled chompers to erase stains and brighten teeth over one 60-minute treatment

Pre-loaded trays are full of a concentrated serum that brightens teeth in one use at home