Magnesium spray usually contains magnesium chloride in water. The name ‘magnesium oil’ often describes the oily feel of such a salt solution on the skin; it does not necessarily mean that an oil is present. The specific product’s ingredient list is what matters.
Practical guidance on skin use
Follow the cosmetic product’s instructions and first test it on a small area of intact skin. Avoid the eyes, mucous membranes, broken or freshly shaved skin, and do not inhale the mist. If marked burning, redness or itching occurs, rinse it off and stop use. Persistent skin reactions should be assessed.
What is known about magnesium absorption
Robust clinical evidence that a spray reliably supplies the body with magnesium is lacking. Small studies and laboratory experiments do not establish that commercial sprays treat magnesium deficiency. A review takes a critical view of broad claims about transdermal magnesium supply.
Cramps have different causes
Muscle cramps alone do not prove magnesium deficiency. Exertion, fluid balance, medicines and health conditions may play a role. Frequent, severe or newly occurring symptoms should be assessed by a doctor. Whether dietary changes or targeted oral treatment make sense depends on the cause and personal circumstances.
Frequently asked questions
Does burning on the skin indicate magnesium deficiency?
No. Skin sensation is not a reliable test of magnesium status. It may result from the concentrated salt solution or irritated skin.
Do I have to tolerate irritation for the spray to work?
No. Painful or persistent irritation is not an established sign of effectiveness and is no reason to continue using the product.
Can a spray replace prescribed treatment?
Do not replace prescribed treatment with magnesium spray on your own. A cosmetic skin product is not a reliably demonstrated treatment for magnesium deficiency.
