I have several pairs of clip-on earrings and bought these to add to them for comfort.  Take out any nibs that may have come on the earring backs before you put these on, then just slip them on with the padded side facing your ear.

They do improve comfort but not enough to wear the earrings enough longer to justfy the cost.  Guess I'm gonna have to bend or spring the backs to make them looser, like we did in the old days.