The best example is with red delicious apples purchased at your local
grocery store.
The apples have whitish areas/stains on the outside skin, and on red
apples the white stains are especially visible. It is difficult to
remove the stains even when trying to rub them off
under running water. When soaked in water for 10 mins the whitish areas
become even
more visible. I assume they are wax, and the type of wax used on apples
supposed to be
water soluble and easily removable and these stains one is NOT. I do
not want to eat apples with pesticides and other dirt under the wax.

These stains are on apples no matter where you buy them. Is there any
way to remove the wax quickly and reliably? Does it make sense to peel
each apple?