Milk of Magnesia has long been used to treat digestive problems, but it’s also an unconventional remedy for oily skin. The active ingredient – magnesium hydroxide – has antibacterial properties to help fight acne, and is absorbent, so it will soak up the oil. Test Milk of Magnesia on a small area for several days before applying it all over your face, and use it with caution; it can cause skin irritation, actually increase acne in some and may give darker complexions an ashy appearance. Also, experiment only with the original version, not flavored varieties of Milk of Magnesia.
Soak Up the Oil
Wash your face as you normally would with facial cleanser. Pat your face dry with a soft towel. Put a dime-sized amount of Milk of Magnesia onto a cotton ball and smooth it over your skin, particularly the oily spots. Wait 15 minutes for it to dry, then rinse with warm water and a washcloth. You can also just dab the liquid onto the oily parts of your skin, then blend it in with your fingers without rinsing it off -- use only a very thin layer. Apply your normal makeup over it.