Some of those responding here refer to anti-sieze compound, others to anti squeal paste. The original question was surrounding the anti squeal paste.
I have never found a need for anti sieze compound on brake components, in fact it would kind of worry me to have it that near the friction surfaces. The anti squeal compound, on the other hand, works great if applied according to the directions and, as previous poster said, let cure before applying brakes.
Have a great day,