i,ve just had my teeth whitened onboard a princess cruise, and would like yo warn people if they are thinking of having theirs done, dont bother! not only does it not work it is very costly! i was guaranteed my teeth would be whitened by six shades but they have not even gone 1 shade whiter!

For most travelers in 2026, teeth whitening on a cruise ship is a "convenience over value" choice. Onboard spas often use brands like GoSMILE, which provides a noticeable improvement (typically 2-4 shades) in about 30-45 minutes. The "worth" comes from the immediate "vacation glow" and the fact that you can do it while relaxing at sea. However, it is significantly more expensive than shore-side options; a session often costs $150 to $200, plus a mandatory 18-20% service gratuity. Furthermore, the results are rarely as dramatic or long-lasting as a professional in-office treatment from a dentist using higher-concentration peroxide gels and specialized UV lights. Many passengers also find that the salt air and the high consumption of "staining" vacation drinks (like red wine or coffee) immediately after the treatment can diminish the results. If you want a bright smile for your formal night photos, it's a nice luxury; if you're looking for a long-term dental investment, you're better off seeing your dentist before you embark.