In-Office Whitening: This is the most effective and quickest method of teeth whitening. It involves a dentist applying a high-concentration bleaching agent directly to the teeth, which is then activated by a special light or laser. In-office whitening can often achieve dramatic results in just one visit.

At-Home Whitening Kits: These kits typically contain a lower-concentration bleaching agent (usually carbamide peroxide or hydrogen peroxide) in the form of gels, strips, or trays that are applied to the teeth. While not as potent as in-office treatments, at-home kits can still produce noticeable results over a longer period of time with consistent use.

Whitening Toothpastes: Whitening toothpastes contain abrasive particles or chemicals that help remove surface stains from the teeth. While they can help maintain whiteness, they are not usually effective for significant whitening on their own.

Natural Remedies: Some people opt for natural methods of teeth whitening, such as brushing with baking soda or using activated charcoal. While these methods may have some mild whitening effects, they are generally not as effective as professional treatments.