Use the ingredient named in the recipe
The original Hallmark Home and Family preparation uses one-half cup magnesium chloride flakes and one-half cup distilled water, plus a heat-safe glass bowl and a spray bottle. It is a published home preparation, not a clinical or preservative-testing protocol. Do not substitute an industrial chemical or an oral medicine. [1]
Dissolve, cool and transfer carefully
Heat the distilled water to boiling, then carefully pour it over the flakes in the heat-safe bowl. Stir until dissolved. Let it cool fully before transferring to a clean, suitable spray bottle. Handle hot water safely; the solution must not be applied hot. These steps paraphrase the published preparation method. [1]
Do not swap Epsom salts and assume the same formula
Epsom salt is magnesium sulfate, while this recipe specifies magnesium chloride. Cup measurements also do not establish a precise elemental concentration or amount delivered by each spray. Changing the salt, hydration state, water amount or nozzle changes the preparation rather than reproducing a validated dose. [2][1][3]
No reliable home shelf life is established here
Distilled water and clean equipment do not make a home mixture sterile or demonstrate preservation. FDA identifies water, ingredients, containers and ineffective preservation as contamination routes. The inspected recipe does not validate a storage interval; do not attach a months-long expiry or assume that normal appearance proves safety. [4][5]
Keep use separate from health claims
This is not an oral preparation, an eye product or a treatment for magnesium deficiency. Commercial topical instructions caution against eyes and damaged skin, and reliable systemic replacement through skin is not established. Imagine someone counts ten homemade sprays as a supplement dose: neither the recipe nor the spray count supports that calculation. A finished product with clear instructions avoids improvising its use and storage. [6][7]
| Step or claim | Boundary |
|---|---|
| Equal-volume recipe | Not a standardized elemental concentration |
| Dissolve in hot water | Cool completely before transfer or use |
| Clean container | Not proof of microbial stability |
| Number of sprays | Not an absorbed replacement dose |
Sources for this article
- Recipe - DIY Magnesium Spray | Home & Family
Source consulted: 2026-09-21. This is a reference resource, not a claim that we conducted the studies or tested a product. - ICSC 1197 - MAGNESIUM SULFATE
Source consulted: 2026-09-21. This is a reference resource, not a claim that we conducted the studies or tested a product. - Magnesium - Health Professional Fact Sheet
Source consulted: 2026-09-21. This is a reference resource, not a claim that we conducted the studies or tested a product. - Microbiological Safety and Cosmetics | FDA
Source consulted: 2026-09-21. This is a reference resource, not a claim that we conducted the studies or tested a product. - Shelf Life and Expiration Dating of Cosmetics | FDA
Source consulted: 2026-09-21. This is a reference resource, not a claim that we conducted the studies or tested a product. - Magnesium Oil Original Spray | BetterYou – BetterYou USA
Source consulted: 2026-09-21. This is a reference resource, not a claim that we conducted the studies or tested a product. - Myth or Reality—Transdermal Magnesium? - PMC
Source consulted: 2026-09-21. This is a reference resource, not a claim that we conducted the studies or tested a product.