Subliminal messaging doesn't have much proof that it really works. In fact, I remember reading that some doctor decided to flash an advertisment for some product, a millisecond so it was unnoticable, during a movie, to see what would happen. He recorded that sales highly increased afterwards. Then, decades later, he was in a lawsuit for the incident, and then, it turns out he never tried the experiment out at all, and even though the results were published to the public, they were fake. Everyone started getting hyped about subliminal messages, yet the original was nothing but a fake. I'm not sure if I quoted perfectly, but I can tell you it went something like that.