This article provides an in-depth look at the advancements in tooth whitening, addressing the growing demand for quick and effective procedures. Techniques utilizing hydrogen peroxide at concentrations of 30-35% and cold light sources are explored, emphasizing their role in accelerating the whitening process while minimizing side effects, such as postoperative sensitivity. Recent studies and chemical reactions like the Photo-Fenton reaction are discussed, showcasing how technological and scientific innovations enhance the effectiveness and safety of tooth whitening. This content is ideal for dental professionals seeking to update their knowledge with evidence-based practices.