At-home whitening refers to various methods and products designed to lighten the color of teeth from the comfort of your home. Common options include whitening toothpaste, strips, gels, and trays that contain bleaching agents like hydrogen peroxide or carbamide peroxide. These products are typically easy to use and can be purchased over-the-counter or online. The effectiveness of at-home whitening can vary based on the product and individual factors such as tooth sensitivity and the initial shade of teeth. While results can be noticeable, they may not be as dramatic as professional treatments offered by dentists. Regular use and following instructions are essential for achieving the best results.