1/2 cup Apple Cider Vinegar
1 Onion, chopped, and smashed in a ziplock.
Add all of this to a blender and blend till liquid. Put it in a jar and refrigerate it. Take a cotton ball and soak each brown spot. I do this at night. Repair happens in your sleep. Do this once a night. Over time this will diminish till the are gone. I have done this same remedy and got rid of skin tags. This is an amazing anti-aging remedy!