Scientifically known as potassium alum or crystal stone, this natural mineral is renowned for regulating perspiration and neutralizing sweat odors. Its versatility extends to hair care, where its astringent (pore-tightening), antibacterial, and hemostatic (stops minor bleeding) properties make it ideal for oily scalps and skin. It's exceptionally gentle on sensitive skin. Apply it directly to the scalp or mix with shampoo to extend time between washes while softening hair ends. Always select pure potassium alum—avoid synthetic ammonium alum by checking labels carefully.
Purchase powdered alum stone from organic stores, pharmacies, or online for just a few euros. As a hair mask, apply for about 15 minutes weekly (or twice weekly during an intensive phase), alone or with other ingredients, to absorb excess sebum and purify the scalp. Alternatively, mix one teaspoon into your shampoo, leave on for 2-3 minutes, then rinse. For oily hair, shampoo twice per wash without overusing product. If ends are dry, incorporate a dash of argan oil or aloe vera gel into the second lather. Opt for a mousse conditioner over liquid. In a rush? Use as dry shampoo: sprinkle a blend of alum powder and talc on the scalp, massage for a minute, and comb through.
For daily use, opt for pre-packaged alum stone in a spray bottle. Dissolve the crystals in mineral water and mist onto hair. Bonus: spray on your face for a refreshing skin treatment.
