In Norway it is required by law to apply a standardized label to all advertising in which body shape, size, or skin is altered through retouching or other manipulation.
I guess because it's always done, and if it was included, then people wouldn't pay any mind to the logo, because they'd think "probably only the teeth were whitened."
Might also be that simply adjusting the brightness on a photo could end up whitening teeth even if that wasn't the goal so that would be a difficult one to enforce without going all the way to "0 changes to the image at all".
The removal of elements that are not considered natural parts of the body, such as yogurt, crumbs, snot, and more, falls outside the scope of the rule.
However, in some cases, the picture or film must be labeled when such removal has been done. In this assessment, one must look at how extensive the removal is on, especially, the skin
If the amount of yogurt, crumbs, or snot is extensive, then it could be considered as a natural part of the body.
note: I wanted to add that I'm not trying to tear down this action on advertising. I think it's fantastic and hugely important. I only fear it will be on everything and people will desensitize from it real quick. I hope then another "natural image" label gets created
Maybe it would be more useful if it was like a chemical hazard label. Add symbols for what kind of alterations were done, i.e skin texture removed 🫥, body shape changed 🧍♀️, teeth whitened 😬, etc…