"you want synthetic, very smooth and soft spherically, ah thing in your exfoliant.". so that do not damage the skin'' ... wait.. but thats a lot of little very smooth and soft spherically f..kng plastic that goes under the drain... and end up in the oceans.
I agree you shouldn't scrub your face with a peach seed..
Instead you should use another type of exfoliators,, like AHA/ BHA. they don't lacerate your skin and certainly the fish you eat will contain less plastic in the belly.