Q. I used castor oil mixed with baking soda to treat a prominent actinic keratosis that I'd had for years. It was gone after two days and hasn't come back two years later. I can't remember where I ...

Baking soda may draw out deeply embedded splinters by increasing osmotic pressure, causing the skin to swell and push the splinter to the surface. A splinter is a sliver of foreign material that gets ...