The pictures arenβt super clear, but it looks like either Cotton or some type off bugs. You may need to do a vinegar wash or the suggested spray. Good luck
The pictures aren't too clear, BUT I'd recommend spraying it with rubbing alcohol. I keep rubbing alcohol in a spray bottle and whenever I see a bug, I spray away. (:
Just be sure to do it in the evening when the sun is down so it doesn't burn the plant.