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Magnesium Oil Spray, magnesium chloride USP, 8 fl oz bottle

Magnesium Oil Spray — Dead Sea Magnesium Chloride, Ready to Use

Magnesium chloride and RO water, ready to spray for a topical routine.

  • Good for: Evening wind-down and after-activity body care routines.
  • How it’s used: Spray on feet, legs or shoulders and massage in; new users start on the feet.
  • Keep in mind: External use only; a mild tingle is common, so avoid broken skin and dilute for the face.
$ 22.99
$ 22.99
Sold Out
$ 2.87floz

Size: 8 oz.

Specifications
Grade
Magnesium chloride and RO-filtered water, 1:1 by weight (about 6% magnesium)
Sizes
8 oz.
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Greenway Biotech · Family-owned in California since 1989

Dead Sea magnesium chloride.
Ready to spray, no mixing.

A pre-formulated topical magnesium chloride spray, mixed at a precise 1:1 ratio with reverse-osmosis filtered water — about 10 mg of elemental magnesium per spray. A popular addition to evening wind-down routines and post-activity body care. Spray on feet, legs, or shoulders; massage in; carry on with your day.

Find your size → See how to use it

Ships from California · 90-day guarantee · For external use only

1:1ratio

MgCl₂ to RO water

~10mg

Elemental Mg per spray

~1,800sprays

Per 8 oz glass bottle

35+yrs

Family-owned in California

01 / Choose your size

Right-sized for your routine.

Durations below assume daily topical use. The 8 oz bottle holds roughly 1,800 sprays — at 20 sprays a day, about three months; at 40 sprays a day, about six weeks.

Magnesium Oil Spray size and typical duration
Size Typical Duration Sprays per Bottle Best For
8 oz ~90 days at 20 sprays/day ~1,800 sprays Standard glass bottle
Quick Facts: Magnesium Oil Spray
Product TypeReady-to-use topical magnesium chloride spray — for external use only
Size8 oz (237 ml) glass bottle with sprayer
Key IngredientMagnesium Chloride (USP), Dead Sea origin, in RO-filtered water
Formula Ratio1:1 — equal parts magnesium chloride to RO water by weight
Elemental Mg per Spray~10 mg
Source / OriginMagnesium chloride sourced from the Dead Sea; bottled in Madera, California
Grade / PurityUSP-grade magnesium chloride active
IngredientsMagnesium Chloride, Aqua (RO-filtered water)
VeganYes — magnesium chloride and water only
Bottle MaterialGlass — prevents reactivity with the magnesium chloride solution
TestingIndependently tested for heavy metals; results consistently well below required limits
SafetyFor external use only. Start on the feet; patch test sensitive areas.
Choose your size →
02 / Ideal for

One spray.
Many moments.

Designed for people who want fast, no-mix topical magnesium they can apply exactly where and when they want it.

Evening Wind-Down

10-20 sprays on the soles of the feet or calves 20-30 minutes before bed is a popular way to fold magnesium into a nightly routine.

After Activity

Spray directly onto tired or tight areas after exercise. The targeted spray reaches a specific muscle group without a full bath or a cream.

Pulse-Point Ritual

A few sprays on the inner wrists or back of the neck as part of an evening wind-down — a small, sensory cue to slow down.

Post-Workout

Popular among active people for spraying onto fatigued legs, arms, and shoulders after training, when the skin is clean and warm.

Sensitive Stomachs

A topical option for people who experience digestive discomfort with higher-dose oral magnesium and prefer to skip the digestive system.

No-Mix Convenience

Pre-formulated at a consistent 1:1 ratio — no measuring, no dissolving, no prep. Spray and go, at home or traveling.

03 / Why this one

Two ingredients.
Mixed with precision.

Magnesium chloride and filtered water — nothing else. The value is in the grade of the active, the precision of the ratio, and the glass it ships in.

1:1

A precise, consistent ratio.

Mixed at a 1:1 ratio — equal parts magnesium chloride to reverse-osmosis filtered water by weight. This is the standard concentration for topical magnesium oil, delivering about 10 mg of elemental magnesium per spray for predictable, repeatable use every time.

USP

USP-grade ingredient.

The magnesium chloride is USP-grade raw material — a purity standard with tighter impurity limits than industrial grades. USP describes the ingredient; the finished spray is not itself a USP product. The same Dead Sea raw material we sell as Magnesium Chloride USP powder, here pre-dissolved and ready to spray.

🌊

Sourced from the Dead Sea.

Magnesium chloride refined from the mineral-dense brines of the Dead Sea — one of the most concentrated natural magnesium chloride sources on Earth, long valued for its rich mineral content.

🫙

Glass bottle — no plastic reactivity.

Concentrated magnesium chloride solutions can react with certain plastics and metals over time. The glass bottle prevents leaching and preserves the solution's integrity from the first spray to the last.

💡

Ready to use, no mixing.

Magnesium chloride powder needs measuring and dissolving. This spray arrives pre-formulated at a known concentration — consistent application with zero prep time, every single use.

⚗️

Tested for heavy metals.

Every batch is independently lab tested and screened for heavy metal content. Results are consistently well below required limits. We test because we believe in verifying quality, not just claiming it.

04 / The science

What "magnesium oil" really is — and what topical magnesium is not.

~10mg per spray

Elemental magnesium, 1:1 MgCl₂ solution

Despite the name, magnesium oil is not an oil. It is a highly concentrated solution of magnesium chloride in water that feels slightly slippery on the skin — which is where the "oil" nickname comes from. There is no oil in the formula: just magnesium chloride and reverse-osmosis filtered water at a 1:1 ratio by weight.

The chemistry behind the per-spray figure is fixed by molecular weight. Pure Magnesium Chloride Hexahydrate (MgCl₂·6H₂O) is about 11.96% elemental magnesium (24.305 g/mol Mg divided by 203.31 g/mol for the hexahydrate). At the 1:1 concentration and a typical spray volume, that works out to roughly 10 mg of elemental magnesium delivered per spray — which is how an 8 oz bottle holds approximately 17,700 mg of elemental magnesium across roughly 1,800 sprays.

Topical magnesium is applied directly to the skin, which is why many people reach for it as an alternative or complement to oral magnesium — it skips the digestive system entirely. The science on how much magnesium is absorbed through the skin (transdermal absorption) is actively studied and not fully settled. We position this as a topical body product, not a substitute for dietary magnesium or oral supplementation. What many shoppers value is the routine itself and the targeted, no-mix application.

For a deeper comparison of topical and oral magnesium, see Oral vs Transdermal Magnesium: Complete Guide.

Key Ingredients

Two ingredients. That is the entire formula.

Magnesium Chloride USP (MgCl₂)

The active wellness ingredient. USP-grade purity, Dead Sea sourced, ~12% elemental magnesium by weight. Highly soluble; pre-dissolved here at a 1:1 ratio.

Reverse-Osmosis Filtered Water (Aqua)

RO-filtered water is the carrier. Filtration removes dissolved minerals and contaminants for a clean, consistent base that keeps the solution stable in glass.

Full ingredients: Magnesium Chloride, Aqua (RO-filtered water).

Allergen note: Contains no common food allergens, no fragrance, no preservatives. As with any topical, patch test on a small skin area before broader use; discontinue if irritation occurs.

Technical Snapshot

Magnesium Oil Spray technical specifications
Product FormatTopical spray solution
Net Volume8 oz (237 ml)
Active IngredientMagnesium Chloride USP, Dead Sea origin
Active Chemical FormulaMgCl₂ (as hexahydrate, MgCl₂·6H₂O)
Formula Ratio1:1 magnesium chloride to RO water by weight
Elemental Mg per Spray~10 mg
Total Elemental Mg per Bottle~17,700 mg per 8 oz
Total MgCl₂ per Bottle~150,000 mg per 8 oz
Approx. Sprays per Bottle~1,800
CarrierReverse-osmosis filtered water
AppearanceClear, colorless solution; slightly slippery on skin
Bottle MaterialGlass with spray top (prevents reactivity)
Packaged AtGreenway Biotech facility, Madera, California
TestingThird-party lab tested; heavy metal screened

What to Expect

First use: The spray feels slightly slippery, then tacky as it dries — that is the magnesium chloride, not residue. A mild tingling on first applications is common, especially on sensitive or freshly shaved skin, and usually fades as skin adapts.

Week 1-2: Skin typically adapts and the tingling diminishes. Many shoppers settle into a consistent evening or post-activity pattern and find the routine becomes a familiar cue.

Month 1+: The habit is established. Whether or not transdermal absorption is part of the effect, the targeted, no-mix routine is the reliable part shoppers come back for.

05 / How to use

Spray.
Massage.
Carry on.

Three favourite patterns. New to topical magnesium? Start with the Evening tab and the feet.

Evening Wind-Down

Quick answer: 10-20 sprays on the soles of the feet, calves, or shoulders 20-30 minutes before bed. Massage in; socks optional.

  1. About 20-30 minutes before bed, spray 10-20 sprays onto the soles of the feet, calves, or shoulders.
  2. Massage gently into the skin to help it absorb.
  3. Pull on a pair of cotton socks if applying to the feet, or let it absorb and leave on overnight.
  4. Rinse off after 20-30 minutes if you prefer — you still get the benefit of the application while limiting how long the salt solution sits on skin.

Tip: The feet are the best starting point — thicker skin means less tingling. For more on this routine, see Benefits of Magnesium Oil on Feet.

06 / Directions

Start on the feet.
Start small.
Make it routine.

A simple four-step approach for your first bottle. Build up gradually as your skin adapts.

  1. 01

    Hold and spray.

    Hold the bottle 1-2 inches from clean skin and spray onto the target area — feet, calves, shoulders, arms. Start with the soles of the feet if you are new to topical magnesium.

  2. 02

    Massage in.

    Gently massage the spray into the skin to help it absorb. A mild tingling on first uses is common and typically fades within 1-2 weeks of regular use.

  3. 03

    Leave on, then rinse if you like.

    Leave on for at least 20-30 minutes. Rinse off afterward if you prefer, and follow with a moisturizer — especially helpful for sensitive skin or after applying to larger areas.

  4. 04

    Keep it consistent.

    Most shoppers settle into 10-20 sprays once or twice a day. Regular use tends to fit a routine better than occasional heavy application. Build up gradually from a lower starting amount.

Good to Know

For external use only — this product is not formulated for oral consumption. Avoid eyes, broken skin, and open wounds. If you have kidney concerns, cardiovascular concerns, or take medications that affect magnesium levels, consult your healthcare provider before use. Pregnant or nursing individuals should seek medical advice before starting a new magnesium routine.

For external use only. Discontinue use if irritation occurs.

07 / Compare

Spray, cream,
or powder?

All deliver magnesium chloride topically (the powder also covers DIY and soaks). Here is how the spray fits.

Magnesium Oil Spray vs other magnesium formats
Format Typical Use Convenience Best For Notes
Magnesium Oil Spray (this product) Targeted topical, larger areas Ready to use, no mixing Fast daily application 1:1 ratio, ~10 mg Mg/spray; vegan (MgCl₂ + water)
Magnesium Cream Targeted topical with conditioning Scoop and massage Dry skin, daily massage Adds shea, coconut oil, carnauba wax; vegan
Epsom Salt (Magnesium Sulfate) Bath soaks; garden use Dissolve in water Classic bath ritual Different chemistry (MgSO₄·7H₂O)
Magnesium Chloride USP DIY oil, soaks, oral solution Measure and dissolve Custom concentrations, value Same Dead Sea active in bulk powder form
Choose your size →
08 / Decision

Is the spray
the right format for you?

A short fit-check so you can decide quickly.

A Great Fit If You

  • Want fast, targeted topical magnesium with no mixing or measuring
  • Prefer a consistent, pre-formulated 1:1 concentration
  • Like to cover larger areas (legs, back) quickly without a greasy residue
  • Experience digestive discomfort with higher-dose oral magnesium
  • Want a vegan topical option — magnesium chloride and water only
  • Are building an evening wind-down or post-workout routine

Consider Another Option If

  • You want skin-conditioning butters in the same step — try Magnesium Cream
  • You want a whole-body soak — try Epsom Salt or Magnesium Chloride USP in the bath
  • You want to control your own concentration or make larger batches — try Magnesium Chloride USP powder
  • You have very sensitive skin that reacts even to diluted application (the cream may be gentler)
Choose your size →
09 / Build the routine

Spray for speed.
These complete the routine.

Many shoppers build a layered routine — spray for fast daily use, a cream for dry skin, and a soak for whole-body wind-down.

Skincare

Magnesium Cream

Moisturizing cream blended with magnesium chloride, shea, coconut oil, and plant-based carnauba wax. Ideal as a follow-up after rinsing the spray from sensitive skin.

 DIY Base

Magnesium Chloride USP

The same Dead Sea magnesium chloride in bulk powder form — make your own oil at a custom concentration, or use for soaks and foot baths.

 Bath Soak

Epsom Salt (Magnesium Sulfate)

USP-grade magnesium sulfate for relaxing full-body soaks. Pairs well with targeted daily spray use as part of a complete routine.
10 / Safety & handling

Read this before
your first spray.

A short safety summary. For external use only. Keep out of reach of children.

  • External use only: this product is not formulated for oral consumption. Avoid spraying near the eyes or onto open wounds or broken skin.
  • Patch test sensitive areas. For the face or scalp, dilute first (1:1 with distilled water) and patch test before full application. A mild tingling elsewhere is common and usually fades with regular use.
  • Consult your healthcare provider before use if you have kidney concerns, cardiovascular concerns, or take medications that affect magnesium levels. Pregnant or nursing individuals should seek medical advice before starting a new magnesium routine.
  • Storage: store in a cool, dry place out of direct sunlight; keep the glass bottle upright and secured. The solution is chemically stable and needs no refrigeration. Do not store in metal containers — magnesium chloride can react with certain metals.
  • First aid: for eye contact, flush with clean water for 15 minutes and seek medical attention if irritation persists. For skin irritation, rinse with water and discontinue use. If ingested, do not induce vomiting; contact Poison Control (1-800-222-1222) or seek medical attention.
11 / FAQ

Common questions.
Honest answers.

If your question is not here, contact our team at questions@greenwaybiotech.com.

Why does magnesium oil sometimes itch or tingle?

Magnesium oil can cause a temporary tingling sensation due to the concentrated magnesium chloride interacting with nerve endings at the skin's surface. This is normal, not an allergic reaction, and typically lessens with regular use. Starting on the soles of the feet — where skin is thicker — is the most common way to minimize it when starting out. The Sensitive Skin tab in the How to Use section has step-by-step tips.

How many sprays should I use per application?

Start with 10-20 sprays per application and increase gradually as your skin adapts. Each spray delivers approximately 10 mg of elemental magnesium. Most shoppers use 10-20 sprays once or twice daily. If you are new to topical magnesium, begin at the lower end on the feet and build up over 1-2 weeks.

Where should I spray for an evening routine?

For an evening wind-down, spray onto the soles of the feet, calves, or shoulders 20-30 minutes before bed. The soles of the feet are a popular choice — the skin there is thicker so tingling is less common, and pulling on socks after applying makes overnight use effortless. See What Are the Benefits of Magnesium Oil on Feet?

How long does one 8 oz bottle last?

An 8 oz bottle holds approximately 1,800 sprays. At 20 sprays per day, one bottle lasts about 90 days; at 40 sprays per day, about 45 days. Your actual duration depends on how many areas you treat and how many sprays you use per area.

Can I use magnesium oil on my face or scalp?

The skin on the face and scalp is more sensitive than the legs or torso. If you apply there, dilute with an equal part distilled water in a separate bottle, patch test first, and avoid contact with the eyes. Rinse thoroughly after 20-30 minutes to avoid buildup on those areas.

Can I use the spray alongside oral magnesium?

Many people use both, as they serve different purposes. Topical application is localized and skips the digestive system, while oral magnesium supports whole-body intake. Introduce changes gradually and consult your healthcare provider if you are unsure about total magnesium intake, especially if you have kidney concerns. See Oral vs Transdermal Magnesium.

What is the 1:1 ratio and why does it matter?

The formula uses equal parts magnesium chloride to RO-filtered water by weight — the standard concentration for topical magnesium oil. That is about 50% magnesium chloride, roughly 6% elemental magnesium, or about 75 mg per ml. It delivers a meaningful ~10 mg of elemental magnesium per spray while staying practical for daily use. Higher concentrations are possible but may increase skin sensitivity; lower concentrations reduce the magnesium delivered per spray.

How does the spray compare to making my own at home?

Both use the same USP-grade Dead Sea magnesium chloride. The ready-to-use spray gives you a consistent 1:1 concentration with no measuring or dissolving. Making your own with Magnesium Chloride USP powder gives you flexibility for custom concentrations and larger batches at a lower per-ounce cost. See How to Make Magnesium Oil Using Magnesium Chloride.

Is this product vegan?

Yes. The spray contains only magnesium chloride and reverse-osmosis filtered water — no animal-derived ingredients. (Our Magnesium Cream is vegan too, made with plant-based carnauba wax.)

Why a glass bottle instead of plastic?

Concentrated magnesium chloride solutions can react with certain plastics and metals over time. A glass bottle prevents leaching and keeps the solution stable and consistent from the first spray to the last. It is also reusable and recyclable.

Who should consult a healthcare provider before use?

Individuals with kidney concerns, cardiovascular concerns, or who take medications that affect magnesium levels should consult their healthcare provider before using magnesium products. Pregnant or nursing individuals and those taking medications should also seek medical advice first. If you are unsure about your magnesium intake, signs of low magnesium levels is a helpful starting point.

Choose your size →
12 / Documents

Lab-tested active.
Honest ingredient list.

Documentation for the curious and the careful.

Safety Data Sheet (SDS) Available on request
Product Label Available on request
Magnesium Chloride COA Available on request
Ready to start?

Pick your size. We'll ship it.

Available in an 8 oz glass bottle. Ships from our family-operated facility in Madera, California. Backed by our 90-day money-back guarantee — if it is not the right fit, we will make it right.

Choose your size →

Ships from California · 90-day guarantee · For external use only

  • 5 stars: 21 (81%)
  • 4 stars: 3 (12%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 2 (8%)
A
Anonymous
It works

It works...

D
Dinah Lindarin
Can use it as a deodorant!

I left a previous review about how mag. spray works for sore muscles and (sometimes) for sleep - now I am very excited to discover that it can be used as a deodorant!
I've been using crystal mineral deodorant as the best alternative I could find but it still has aluminum in it (albeit not the worst form).
Mag. Chloride spray neutralizes odor causing bacteria by balancing skin's PH levels and doesn't block sweat glands. It beneficial for skin - reduces irritation and dryness - raises magnesium levels in body and, on top of all that, NO aluminum! Awesome!

D
Dinah Lindarin
Works for sore muscles and sleep

Just started using and it does seem to work for sore muscles pretty well. Sometimes it seems to work well for sleep, other times not so much.
But since reasons for not sleeping well can be many and varied, I'm giving the magnesium spray the benefit of the doubt. Also, I'm sure the benefits are more pronounced when a deficiency exists. Sometimes it does tingle a bit and is a little sticky feeling on skin - but both effects go away pretty quick and a very small price to pay for the benefit given.

R
Ruth Higgins
For pain on feet/legs! Great!

Oh my Goodness! It works fast with just a few quick sprays then wipe sprayed around and pain goes away in just a couple minutes! Good stuff!

B
Bob Thompson
Worth a try

I have been taking your product magnesium chloride for my cramping and as a sleep aid.

I have a friend who has a lot of physical problems so I decided to try the topical spray. Too soon yet to fully discern it’s benefits, but initially it seems promising

S
Shirley Phuntsok
Wonderful Magnesium Oil

Very good. I plan to order again. Thank you.

M
Magdaleno Murillo
Gracias lo recomiendo para los calambres

Gracias muy bueno para los calambres lo recomiendo padezco de calambres ya hoy que tengo el esparay de magnesio donde me da nomas lo esparayo y se va

D
Donna Utsch
Still Evaluating.....

Well, I love the convenience of the spray AND the substantial size bottle. I've not really felt the "tingling" some people refer to, but that I'm sure is because my body isn't magnesium deficient. Thank you for offering magnesium in an oil. Love it!

L
Linda Hodge
Excellent

I use the oil daily. I have brown itchy
Spots on my back but the oil takes care of the itch & because it is a spray I can get it on my back. I also use it on my face when I’ve been out in the sun. Be sure not to rub it close to your eyes because it burns.

B
Bogdan Koscik
#1

Works very well on my knees and muscles.

K
Kandace Stroup
Great for muscle tightness!

I've been using Greenway Biotech Magnesium Oil for several years to help with tired or tight leg muscles and feel that it really helps. I do have a hard time using the spray on my thighs or upper legs once the oil falls below the halfway mark, but end up spraying my hands and rubbing it on and it seems to work fine.

J
Jeffrey Bryan
Review

So far so good. :)

H
Heather Graham
Works Wonders

This stuff is amazing! I I’ve been using it for a variety of things, such as psoriasis and also muscle and joint pain. It has helped tremendously on all accounts! I will definitely be buying more when this runs out.

H
Homan Javeheri
Way better than what I expected

Most probably!!!

E
Erik Fernando Vivanco
Excellente

Muy buen producto

J
Javier Gonzalez
Was as always.Perfect product and

Was as always.Perfect product and very satisfying delivery!

Keep that good work.
Congratulations to all of you.

G
Gizella Nagy
excellent quality

Works very good under my arms & feet!

K
Kelvin S.
It didn't work for me.

It didn't work for me. That doesn't mean it's a poor product it just didn't help me. Have a neighbor who uses a similar product and it helped her.

G
Grace L.
Best Magnesium Oil

I absolutely love this product and recommend it to many of my patients if I suspect a magnesium deficiency, which is becoming increasingly common.

a
alexandra g.
BEST QUALITY MAGNESIUM OIL

This is the purest magnesium oil I’ve been able to find, and I have searched high and low - and very bio available, a little goes a long way. I couldn’t be happier with the quality and service of Greenway Biotech. Exceptional.

a
alexandra g.
EXCELLENT.

I’m amazed at how effectively absorbed this magnesium. Very impressed with the quality and efficacy.

B
Bridgette L.
Excellent Product

I have definitely enjoyed using the product. I use it first thing in the morning when I get out of the shower. It tingles but I'm used to it now. I have recommended this to several of my friends and already bought a second bottle that I shared with a co-worker. I fixing to order 2 more, 1 for me and 1 for my hairdresser.

L
LAURA D.
DISGRACEFUL CUSTOMER RELATIONS

I love magnesium chloride and I use it for myself and my plants. Yet this company cares absolutely nothing about you, your privacy, your questions... I have never seen such a " I just work here" attitude in the longest time. And the guy seems to be the owner. Therefore I will NEVER buy again from this company. I was not even sure it what he sent me was safe after his rudeness.

M
Maria E.
Great product.

I am glad I bought it. Very helpful on pain management . Recommended!

T
Toni B.
Magnesium oil

So far so good!

T
Teresa K.
Magnesium spray

So far it's good, I have not used it long enough, but I like that the sprayer is better than most, where they stop working after awhile, but so far it is still working. The Magnesium seems to be a good magnesium.

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