in the future you can actually brand your skin with the beauty product that you're using. I think it's cool. But as with all designer products when it comes covetable, how can you stop the fakes? But if the concept somehow marries labels with technology (like that branded spot darkening when it hits sunlight, or some sort), then I reckon knocking it off would be just a tad bit more of an effort.
This is Ryan McSorley's product design final project for Central St. Martins. Though its not as hi-tech as laser etched skin (it's just an embossed headband) the idea is quite novel. Read about it HERE.