Impossible to say if you CAN get rid of them because we do not know what has caused them.
Many times a dermatologist can do wonders with laser treatment of skin with increased pigmentation, so I'm afraid that you will need to see a dermatology specialist for two reasons.
First, to get the proper diagnosis. This may require a biopsy (taking a small piece of skin to study under the microscope) but can more likely be done simply on the physical exam.
Secondly, to get definitive and proper treatment.
Again, no way to know if you could possibly do this with any over-the-counter product without knowing exactly WHY you have these spots.
are you there sir?