The best way to apply ACV for acne?

Do you dilute the ACV or apply it straight? Is it best to leave it on overnight or rinse it off after 15 minutes?

Also, I have a bunch of flat moles/sunspots I keep getting from the sun, will doing this routine with ACV for Acne have any effect on them? I've heard ACV is quite harsh for mole removal, so I definitely don't want to do that on my face. But if it will fade them away from doing the routine for acne, I'll be killing two birds with one stone. Tweet