Dynavector XV-1S question

I notice on occasions fine white strands that appear to "stick" to the under body of my Dynavector XV-1S cartridge. Are these strands of vinyl( even though they look white) that are being scoured from the record or just dust that gets picked up from the grooves. I tend to wash my used records but usually not the new ones. I think but am not sure as to whether I notice this more when I play new records .

I appreciate comments or similar observations

Thanks