Is there any function in Snap that provide color balance after mosaicing?

I input all tiles into snap after atmosphere correction and did mosaic. However, since I can’t find a small piece of my interested area from the same acquisition day with other tiles, so that there is an obvious boundary between different acquisition date data after mosaicing. I d like to know is there any ways to fix this problem?

Thanks. : )

No, it’s not possible to do it. To have these boundaries is pretty normal.
This is due to the reason that the atmospheric correction is never perfect. Especially at the boundaries the path through the atmosphere is longer as at nadir and there for the error is higher.