A 26-year-old came to Pristine Dental wanting a brighter, whiter smile. After confirming his teeth and gums were healthy, we carried out in-office (chairside) professional whitening in a single sitting. His tooth shade improved from C2 to B1 on the Vita classical guide — about 5 shades lighter — for a noticeably brighter, natural-looking smile the same day. (Clinical record in 3D-Master shades: 3L1.5 → 1M2.) Whitening results vary from person to person, depending on the starting shade and the cause of discolouration.