This solved my brake squeal issue on acceleration from 0-20mph:
Before I used this, I too removed my pads and re-installed them to "re-seat" them on the caliper. The squeak when away until after the 5th time hitting the brakes. Mine was strictly limited to the passenger side rear, so I used the above and the squeal has been gone ever since. You just remove the pads, spray on the back sides of the pads (the side that seats to the caliper), wait 10minutes, and re-install. It apparently adds an extra layer to absorb resonance brake pads can produce when rubbing against the rotor. I have yet to test this long-term, but so far so good. I'm just happy my car is squeak free.