Hello, for EEG, you should probably prefer ICA over SSP. In my experience, SSP removes too much signal e.g. when used for removal of ocular artifacts from EEG data.
There are extensive tutorials on artifact removal via ICA and SSP on the MNE website, take a look at these. They also explain how to isolate eye blinks even if no dedicated EOG channels are available.
See also:
Best wishes,
Richard