Yes, but not because magnesium soaks through your skin. It works because you pair a calming scent with a consistent bedtime cue, and that pairing has real sleep science behind it.
Does a sleep spray absorb magnesium through your skin?
Not in any amount that matters. Research on magnesium crossing skin into your blood is thin and unconvincing. A few spritzes will not move your serum magnesium, whatever the label suggests. The magnesium is there mostly because the category expects it. The real work happens through your nose.
What actually does the work?
Scent and routine. The mist is built on bergamot, lemon balm, and German chamomile, three aromas with evidence for lowering stress and easing you toward sleep. Bergamot has reduced anxiety and improved subjective sleep quality in studies. Your sense of smell wires straight into the brain regions that set mood and arousal.
The routine matters as much as the scent. Spray the same smell at the same time each night and your brain reads it as a signal to wind down. That is core CBT-I, the behavioral gold standard for insomnia: repeatable pre-sleep cues train your nervous system to downshift on schedule.
Sleep mist or melatonin?
Different tools. Melatonin shifts your circadian timing, good for jet lag, and it is not a sedative. A mist does not touch your clock. It helps you relax and signals that sleep is coming. Some people use both. Neither replaces fixing your screens, stress, and sleep environment.
Is it worth the price?
If you expect a magnesium supplement in mist form, no. If you want a well-made calming spray plus a nightly ritual with real behavioral science behind it, it does exactly what it says. The Mito Calm Sleep Mist is argan oil, bergamot, lemon balm, German chamomile, and magnesium, made for your pillow, not your bloodstream.
Not evaluated by the FDA. Not intended to diagnose, treat, cure, or prevent disease.