Back fat can be insanely stubborn but if you know how to lose back fat, you've already won half the battle. Knowing what you need to do is key. If you go in blindly expecting the best possible results, you may only be setting yourself up for some major disappointment.
Back fat will not come off if there isn't any physical activity being done and it also won't budge if the wrong foods are being eaten and too many calories are being consumed. If too many calories are consumed, the body is just going to hang on to them unless they're burned off. That's where exercise comes in.
There is no magic pill or other formula that is going to give long-lasting results. Also, many of the fad diet pills out there right now can actually be harmful to the body and cause uncomfortable side effects.
For a step-by-step guide, please see How to Lose Back Fat.