Natural alum crystal, commonly known as potassium alum (chemical formula: KAl(SO₄)₂·12H₂O), is a naturally occurring mineral salt renowned for its astringent and antibacterial properties. It has been utilised for centuries across various cultures for medicinal, cosmetic, and purification purposes.
What Is Natural Alum Crystal?
Potassium alum is a double sulphate of aluminium and potassium. It typically forms as transparent or white crystalline stones. Despite being marketed as “aluminium-free,” it’s important to note that potassium alum does contain aluminium in its molecular structure. However, the aluminium in potassium alum is a larger molecule that is believed not to be absorbed through the skin, distinguishing it from the aluminium compounds found in many commercial antiperspirants .
Sourcing and Origins
Natural alum crystals are mined from mineral-rich regions worldwide. Significant deposits are found in areas like the Western Desert, where the crystals are collected directly from the earth’s surface . The mineral forms through the weathering of potassium-rich rocks, such as trachyte, under the influence of sulphate-rich waters .
Historical Uses
Alum has a rich history of use across various civilisations:
• Ancient Egypt: Employed in skincare routines for its firming and soothing properties.
• Ancient Greece and Rome: Utilised as a styptic to stop bleeding and as a mordant in dyeing fabrics .
• Traditional Chinese and Indian Medicine: Applied for its antiseptic qualities in treating wounds and ulcers.
• Middle Eastern Cultures: Incorporated into beauty rituals for its astringent effects .
Efficacy as a Deodorant
Natural alum crystals function as deodorants by creating a thin, invisible layer of mineral salts on the skin. This layer inhibits the growth of odour-causing bacteria without blocking sweat glands, allowing the body to perspire naturally .
Natural Alum crystals offer a time tested natural alternative to conventional High Street deodorants. Whilst they do not prevent perspiration (blocking the skin's pores is not a good thing), their ability to neutralise odour-causing bacteria, makes them a viable option for those seeking a more natural and eco-friendly approach to personal hygiene.
For a range of 100% natural deodorants that contain natural alum crystal in powdered form, that are easy to use, and give all day protection, check out the natrl skincare water based roll-ons and solid sticks
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