The sensation of pruritus, or itching, following topical application of magnesium chloride solutions is a common experience. This physiological response is primarily attributed to the concentration of magnesium chloride and its interaction with the skin’s surface. The high salt content can draw water from epidermal cells via osmosis, causing dehydration and irritation. Additionally, the mineral can stimulate nerve endings in the skin, triggering a sensory signal interpreted as itch.
Magnesium is an essential mineral involved in numerous bodily functions, including muscle and nerve function, blood sugar control, and blood pressure regulation. Transdermal application offers a method of supplementation, potentially bypassing gastrointestinal absorption issues that can arise with oral magnesium. Historically, mineral baths and topical applications have been utilized for therapeutic purposes, recognizing the skin’s capacity to absorb certain substances.