Have you tried using a blower to clean it? Don't suggest you to touch the sensor.
My SOP when I encounter hair or dust on the sensor, I remove the lens, with the front facing down (don't want more dust dropping in or going in), power up the camera, set the mirror to tilt up (through menu option of manual sensor cleaning), using the blower point inwards to the front of the camera (where the lens used to be), and start pumping the blower ... if it still persists, need to use a sensor cleaner kit which you can buy from most reputable CAMERA shop, not electronics shop (afraid they give you a lower quality product, thus scratching your sensor).
If all else fails, need to ask the service center to do a cleaning of the sensor, may involve some financial transaction.
HTH.
Cheers