PIMPLES & POTASH
If you suffer from acne, you might have exhausted over-the-counter treatments and don't want to try prescription medications. Acne is common in the teen years and affects around 85 percent of people at some time in their lives, according to the American Academy of Dermatology. You might see potassium alum advertised as an acne treatment, although it's more often suggested as a natural deodorant. Ask your doctor before using potassium alum to treat acne.
Potassium gum "Alum" is a mineral found in two forms, a rock form, called kalunite, and a fiber form, called kalinite. Potassium alum is approved by the Food and Drug Administration for use in cosmetics and is also used in manufacturing.
This mineral acts as an astringent. Astringents dry the skin. Astringents also have a mild antiseptic effect when applied to your skin. Astringents also remove dead skin cells from your skin's surface. Your skin might feel tight or tingling after applying astringents such as potassium alum, according to Skin-care-tips.org.
If you have very oily skin, an astringent such as potasssium alum might help acne. However, if you do not have excessively oily skin, you should not use astringents because of their harsh effects on your skin, according to the National Institute of Arthritis and Musculoskeletal and Skin Diseases. If you do use astringents such as potassium alum, dab them only on the oily spots.