Consumer advocacy teardown
BetterYou Magnesium Oil Spray alternative & active ingredient dupe
Stop paying £12.95 for BetterYou. The bulk active is Magnesium chloride hexahydrate flakes — 79% less per working litre than a typical pack.
- Active
- Magnesium chloride
- CAS
- 7791-18-6
- Dupe
- Magnesium chloride hexahydrate flakes
- Saving
- 79% / L
Saving is per litre of working-strength mix versus a typical pack price, not versus the DIY kit total. Shop prices move — always check the listing.
The Marketing Claim & The Catch
A typical 100 millilitres pack of BetterYou Magnesium Oil Spray is about £12.95 in wellness & supplements. That is a snapshot, not a live Amazon price — listings, sizes and deals move. The marketing line is that you are buying a finished lifestyle product, not a weighed chemical.
On the pack: Transdermal magnesium for muscles and recovery; Pure Zechstein oil; and Avoids the digestive system.
The catch: ‘Magnesium oil’ is a saturated solution of magnesium chloride, not a lipid. Flakes from the same Dead Sea / Zechstein geology dissolve in water for pennies. Not a medicine; evidence for transdermal magnesium is mixed.
- “Transdermal magnesium for muscles and recovery”
- “Pure Zechstein oil”
- “Avoids the digestive system”
Proprietary Blend & Dosage Breakdown
The labelled active is Magnesium chloride at 31%. Everything else in the pack is water.
At 31% active, most of what you pay for is carrier and packaging. The brand is selling convenience, fragrance and a label — not a uniquely potent molecule.
This is a food-supplement comparison, not a medicine. Proprietary blends, gummies and resins make it hard to see milligram-level doses. The teardown below uses the labelled active and a bulk equivalent you can weigh or capsule yourself.
- Labelled active
- Magnesium chloride
- 31%
- Carrier
- Water
- Retail pack
- 100 millilitres · £12.95
The Active Chemical Alternative (Dupe Stack)
The dupe stack is Magnesium chloride hexahydrate flakes at 47% bulk. Indexed as CAS 7791-18-6, formula MgCl2·6H2O. Buy it as 1 kg for about £8.99 from Amazon UK.
Working strength: 300 g/L. Indicative cost £2.70 per diluted litre — 79% below a typical branded pack on a per-litre basis, before you reuse leftover bulk.
Mix or dose as a food supplement using the steps below. Do not exceed labelled amounts, and read the supplier’s information. This is not medical advice.
- Food/bath-grade flakes, not an injectable. Not medical advice.
- For a spray-style ‘oil’, dissolve about 300 g of flakes per litre of hot water, cool, and bottle in a clean atomiser. That is a strong brine; dilute further if it stings.
- A 1 kg bag makes roughly 3 L of that concentrate — versus 100 ml at nearly £13.
- Patch-test. Rinse if skin burns. Do not apply to broken skin.
- Store the dry flakes sealed; they pull water from the air.
Mixing desk
Dilution calculator
Switch between filling a sprayer and covering a measured surface. Figures are educational estimates from the listed ratio — always check the SDS.
Formula
Magnesium chloride hexahydrate flakes
- Concentrate
- 30 g
- grams of solid
- Water
- 0.1 L
- carrier volume
- Batch cost
- £0.27
- 0.1 L working solution
- Saved vs retail
- £12.68
- 98% · retail £12.95
Estimated coverage at the listed rate: 0.2 m².
Side-by-Side Price & Potency Comparison
Head-to-head comparison
| Measure | Retail brandedBetterYou | Raw active dupeDupeStack |
|---|---|---|
| Product | BetterYou Magnesium Oil SprayAmazon UK search — listing, not a confirmed seller | Magnesium chloride hexahydrate flakes |
| Pack / unit | 100 millilitres · £12.95 | 1 kg · £8.99 |
| Active | Magnesium chloride at 31%Carrier: Water | 47% bulkMgCl2·6H2O |
| CAS number | Not disclosed on pack | 7791-18-6 |
| Working strength | Ready-to-use pack | Dilute 300 g/L |
| Cost per litre | £129.50 / L typical pack | £2.70 / L mixed from bulk |
| Headline saving | Baseline | 79% cheaper |
| COSHH / PPE | Follow the branded SDS | Gloves. Chemical-resistant gloves (nitrile or neoprene) |
Active ingredient and cheaper alternative — FAQ
What is the active ingredient in BetterYou?
BetterYou Magnesium Oil Spray is labelled as Magnesium chloride at 31%. The carrier is Water. Pack size: 100 millilitres. The bulk equivalent we index is Magnesium chloride hexahydrate flakes (CAS 7791-18-6).
Is Magnesium chloride hexahydrate flakes safe on the intended surface?
Used at the listed working strength (300 g/L), the dupe is the same chemistry as the branded pack for food-supplement use as labelled — not as a medicine. That is not a blanket all-clear: read the supplier SDS, wear the listed PPE, keep acids away from hypochlorite, and follow UK HSE/COSHH rules. Wellness teardowns are supplements, not medicines.
Is there a cheaper alternative to BetterYou Magnesium Oil Spray?
Yes. The bulk equivalent is Magnesium chloride hexahydrate flakes (CAS 7791-18-6). Indicative saving 79% per working litre versus a typical £12.95 pack. Working strength: 300 g/L. Live shop prices move.
How do you mix the BetterYou Magnesium Oil Spray dupe stack?
Food/bath-grade flakes, not an injectable. Not medical advice. For a spray-style ‘oil’, dissolve about 300 g of flakes per litre of hot water, cool, and bottle in a clean atomiser. That is a strong brine; dilute further if it stings. A 1 kg bag makes roughly 3 L of that concentrate — versus 100 ml at nearly £13. Patch-test. Rinse if skin burns. Do not apply to broken skin. Store the dry flakes sealed; they pull water from the air.
DupeStack provides chemical concentration data and educational mixing guides. Always review official manufacturer Safety Data Sheets (SDS) and comply with UK Health and Safety Executive (HSE) and COSHH regulations when handling concentrated substances. Some links on this site are affiliate links.
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£15.97indicative kit · Amazon cannot add a mixed search kit as one basket