Subliminal Flash is based on 2 principles:
1) We can perceive some messages on a subconscious level that we do not see on a conscious level. The human brain takes in all the information it needs to build a response from even an image flashed at 1/100th of a second.
2) Our behavior is often based on patterns created in our childhood. These patterns are automatic and subliminal. There is no problem having a pattern that leads us to success in business, in love and relationships, etc.
However, many people have patterns that cause them to be unlucky. Since human behavior is an outer manifestation of inner belief systems, subliminal messages can often act as the stimulus to condition a more beneficial response.
This phenomenon is sometimes called "The 25th frame effect" or "Subliminal effect". A frame with a predefined image is inserted after every 24th frame on a film. The time of exposure during the play is 0.04 second and not obviously detected right then.
However, if a person is watching an advertisement on TV (which is typically about 25 seconds long) then the image on the 25th frame is seen for a total of 1 second. It may still pass undetected but it does influence the subconscious. In many countries there are laws and codes that prohibit the use of "25th frame".
Therefore, more sophisticated technology is now being used where the "special" image is not inserted in a separate frame but rather tints or parts of the image are blended with every frame of the film or video. This technique requires heavy computer processing but is 1.3 times more effective than use of the "25th frame" method and legally very difficult to prove. The discovery of this technique in 1979 revolutionized the advertisement industry.
Subliminal messages work... and all it takes to influence your mind, is a simple 100-millisecond message flashed