Following a discussion about misleading cosmetic claims regarding products showing a temporary whitening effect after washing off, I have some questions based on common marketing tactics:

• Regarding images that show significant temporary whitening after using a wash-off product, is this effect typically achieved through controlled demonstrations by the seller rather than being representative of normal user experience?
• What is the true function of Titanium Dioxide in soap? Is it primarily used to whiten the soap bar itself, and does it provide skin whitening or sun protection after the soap is washed off?
• Is the noticeable temporary whitening effect seen in some wash-off products (like certain soaps) often due to the inclusion of bleaching agents, which can be harmful with regular use?
• When sellers attribute skin whitening from a wash-off product to Titanium Dioxide, is this often a misleading claim used to avoid disclosing the use of bleaching agents?
• Is it possible to formulate a wash-off lotion that leaves a temporary white cast and has some water resistance after rinsing? If so, what types of ingredients would be used (such as Titanium Dioxide Nano EasyDisperse™, Water-Capsule™, Silicone Blender, and Light Cream Maker™)?
• Would such a wash-off lotion provide sun protection comparable to a standard leave-on sunscreen?