Magnesium Spray, Lotion or Drink: What Works for Kids?
The short answer: there is little good evidence that meaningful amounts of magnesium pass through the skin, so sprays, lotions and bath flakes are not a reliable way to raise a child's magnesium levels. They can still be a lovely part of a bedtime routine. If the goal is to top up magnesium, food and an oral supplement are the routes with real evidence behind them.
What topical magnesium products are
- Sprays and "oils", usually magnesium chloride dissolved in water.
- Lotions, creams and butters with magnesium added to a moisturiser.
- Bath flakes and Epsom salts, which are magnesium chloride or magnesium sulphate.
Does magnesium absorb through the skin?
This is the key question, and the honest answer is that it has not been shown convincingly. The outer layer of skin is designed to keep things out, and charged minerals like magnesium do not cross it easily. A handful of small studies have reported changes, but they are limited and inconsistent, and reviews of the research have concluded that absorption through the skin is not established. There are almost no studies in children.
The practical downsides for children
- Stinging and itching. Magnesium chloride is a salt. On dry skin, eczema or small scratches it can sting, which is the opposite of calming at bedtime.
- Unknown dose. You cannot tell how much, if any, has been absorbed, so you cannot compare it with what your child needs.
- Residue. Sprays can leave skin feeling sticky until they are rinsed or rubbed in.
If you do use a topical product, do a small patch test first, avoid broken skin and stop if your child complains.
Where they do help
A warm bath and a slow massage with lotion are calming rituals in their own right, whatever the magnesium does or does not do. If your child loves a bath-and-story routine, keep it. Just do not rely on it to cover their magnesium needs. Our guide to magnesium and sleep covers what a good wind-down looks like.
Oral magnesium: food first, then a top-up
Food is the foundation: oats, wholegrains, beans, bananas, yoghurt and nut butters all contribute. When diet falls short, an oral supplement is the reliable way to top up, because the dose is known and the absorption of good forms has been studied. For children, a gentle form like magnesium glycinate in a liquid is easy to measure by age and easy to hide in a drink.
| Spray or lotion | Bath flakes | Oral liquid | |
|---|---|---|---|
| Proven to raise magnesium | No | No | Yes, for well-absorbed forms |
| Known dose | No | No | Yes |
| Can sting | Sometimes | Rarely | No |
| Part of a calming routine | Yes | Yes | Yes, in the evening drink |
That is why our own magnesium for kids is a liquid you can measure: 2.5ml for ages 1 to 5 and 5ml for ages 5 to 14, stirred into a cool drink.
Our magnesium
Liposomal Magnesium for Kids (Age 1+) is truly unflavoured, gentle on little tummies, and built for absorption. Magnesium contributes to the normal functioning of the nervous system.*
*Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Consult your healthcare provider before use if your child has a medical condition or takes medication.