---
title: "magnesium bath salts — £210K/yr Amazon United Kingdom Niche, Score 37/100 - Flapen"
canonical_url: "https://flapen.com/research/uk/beauty/magnesium-bath-salts"
last_updated: "2026-07-20T18:43:58.273Z"
locale: en
meta:
description: "soft demand (-36.3% this quarter) — magnesium bath salts doesn't clear our bar today. Data updated Jul 2026."
"og:description": "soft demand (-36.3% this quarter) — magnesium bath salts doesn't clear our bar today. Data updated Jul 2026."
"og:title": "magnesium bath salts — £210K/yr Amazon United Kingdom Niche, Score 37/100 - Flapen"
---
# **magnesium bath salts**
**Skip it**
Soft demand (-36.3% this quarter) — this niche doesn't clear our bar today.
Market size 41Growth 7Conversion 95Competition 17Returns 100Price range 32Avg price 21Brand share 9Review moat 41Quality gap 21
**Returns**
**Incredible****0.0%**
return rate — above 6% kills the launch gate
**Conversion**
**Incredible****12.6%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Okay****£210K**
£210K/yr · 220K searches
**Review moat**
**Okay****2,372.6**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Okay****£2.38–£21.04**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Bad****£7.61**
avg listing price — sweet spot $15–$100
**Competition**
**Bad****79%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****97%**
top-5 brand share — brand-locked demand
**Growth**
**Bad****-36.3%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, magnesium bath salts is a £210K/yr Amazon United Kingdom market (220K searches/yr). The top 5 brands hold 97% of demand. Demand peaks in Jan. Verdict: Skip it — 37/100.
Data updated Jul 18, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **Market data**
- **Units sold / yr**
- **30K–40K**
- avg 1,500–2,000/product
- **Revenue / yr**
- **£228K–£304K**
- units × avg price
- **Launch success**
- **—**
- 0 of 0 new (360d)
- **Conversion rate**
- **12.6%**
- **Avg BSR**
- **#32**
- **Page quality**
- **0%**
- **Prime**
- **80%**
- **Sponsored**
- **100%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **63 months**
- **Avg seller age**
- **177 days**
## **Competition**
The top 5 products capture 79% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**6 **▼falling
**Sellers**
**48**
**Top-5 brand share**
**97%**
Top 20: 100%
**Top-5 click share**
**79%**
Top 20: 100%
**Open market**
**0%**
- Westlab39% - BetterYou35% - The Intelligent Health10% - Hexeal9% - Grow Chem5% - ELYSIUM SPA3%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -36.3% search growth over the last 90 days.
9K7KSpike '25Black Friday '25Holiday '25 seasonSepDecMarJunAugNovMarMay
Peak months: Jan · busiest ÷ quietest = 1.9×
[**Open Trend **](https://flapen.com/research/uk/beauty/magnesium-bath-salts/trend)
## **Product shelf**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%£21K20%£42K30%£63K40%£84K1001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 10 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Help Ease Physical Tension & Feel Soothed Calm & Renewed. Promotes Relaxation & Sleep. 100% Pure & Natural Mineral Salt**Westlab**£3.41**4.8★839 rev](https://www.amazon.co.uk/dp/B078NFJJWV) [2**BetterYou Magnesium Original Bath Flakes Natural Source of Zechstein Magnesium Mineral Bath Flakes Cleansing Bath Salts Vegan & Palm-Oil Free 1kg**BetterYou**£6.02**4.7★4,547 rev](https://www.amazon.co.uk/dp/B00477782K) [3**Hexeal Magnesium Flakes 5kg 5kg Bucket of Magnesium Flakes to Soothe Muscles Joints & Aches for Bathing Gardening & Beauty Household & Commercial Use**Hexeal**£11.30**4.5★357 rev](https://www.amazon.co.uk/dp/B079G5X896) [4**The Intelligent Health Magnesium Sulphate Bath Salts Soak Muscle Magnesium Epsom Salts for Bathing and Foot Soaking for Women & Men - 1kg Resealable Pouch**The Intelligent Health**£5.08**4.6★8,992 rev](https://www.amazon.co.uk/dp/B089Y5266T) [5**BetterYou Magnesium Sleep Mineral Bath Flakes | Zechstein Magnesium Infused with Lavender & Chamomile to Soothe Aching Muscles | Relaxing Essential Oils for Deep Sleep | 1kg**BetterYou**£6.01**4.7★613 rev](https://www.amazon.co.uk/dp/B08NFVSL87)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Elysium Spa 100% Natural Mineral Salts - Magnesium Flakes (500g)**ELYSIUM SPA**£2.57**138 rev1y ago](https://www.amazon.co.uk/dp/B0DJD1Y2XF) [**Grow Chem Magnesium Flakes (4KG Bucket) Pure Magnesium Chloride from The Dead Sea - Mineral-Rich Bath Salts for Foot & Muscle Soaks - Improves Sleep Stress Relief Joint Health & Skin Hydration**Grow Chem**£12.38**343 rev4y ago](https://www.amazon.co.uk/dp/B09GZGQMS1) [**BetterYou Magnesium Sleep Mineral Bath Flakes | Zechstein Magnesium Infused with Lavender & Chamomile to Soothe Aching Muscles | Relaxing Essential Oils for Deep Sleep | 1kg**BetterYou**£6.01**613 rev5y ago](https://www.amazon.co.uk/dp/B08NFVSL87) [**BetterYou Magnesium Muscle Mineral Bath Flakes Natural Source Magnesium Chloride Bath Flakes to Sooth Aching Muscles Sports Recovery Salts Vegan & Palm-Oil Free 1kg**BetterYou**£5.87**328 rev5y ago](https://www.amazon.co.uk/dp/B08NFRGQ5Y) [**The Intelligent Health Magnesium Sulphate Bath Salts Soak Muscle Magnesium Epsom Salts for Bathing and Foot Soaking for Women & Men - 1kg Resealable Pouch**The Intelligent Health**£5.08**8,992 rev6y ago](https://www.amazon.co.uk/dp/B089Y5266T)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Westlab Epsom Salts 1kg - Soothe and Relax Muscles to Improve MSK Health & Comfort by Reducing Stiffness and Aching. Sports Recovery - Improved Performance.**Westlab**£2.38**4.8★**▲ 166%**](https://www.amazon.co.uk/dp/B003V9M2ZS) [**Grow Chem Magnesium Flakes (4KG Bucket) Pure Magnesium Chloride from The Dead Sea - Mineral-Rich Bath Salts for Foot & Muscle Soaks - Improves Sleep Stress Relief Joint Health & Skin Hydration**Grow Chem**£12.38**4.7★**▲ 48%**](https://www.amazon.co.uk/dp/B09GZGQMS1) [**Help Ease Physical Tension & Feel Soothed Calm & Renewed. Promotes Relaxation & Sleep. 100% Pure & Natural Mineral Salt**Westlab**£3.41**4.8★**▲ 15%**](https://www.amazon.co.uk/dp/B078NFJJWV) [**Hexeal Magnesium Flakes 5kg 5kg Bucket of Magnesium Flakes to Soothe Muscles Joints & Aches for Bathing Gardening & Beauty Household & Commercial Use**Hexeal**£11.30**4.5★**▲ 11%**](https://www.amazon.co.uk/dp/B079G5X896) [**Pure Epsom Salts 10kg Total Body Therapy 100% Pure Premium Quality Magnesium Sulphate Traditional Bath Soak Fine 1.4mm Easily Dissolvable Grain Size Vegan Friendly by The Intelligent Health**The Intelligent Health**£21.04**4.7★**— 7%**](https://www.amazon.co.uk/dp/B088H98S99)
**~~View all trending →~~**
## **Reviews**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**19%
*“Great product very pleased with purchase”*
**Salt Content**11%
*“the salts are clean”*
**Value For Money**10%
*“Worth the”*
**Muscle Pain Relief**7%
*“Helps with muscle soreness”*
**Advertised Vs Actual Product**6%
*“As described”*
**Magnesium**5%
*“These magnesium flakes are absolutely wonderful”*
**Soothing Effect**5%
*“It does help with easing pain”*
**Comfort-Overall**5%
*“Relax”*
**Sleep Quality**4%
*“Excellent if you want a good nights sleep”*
**Soft Feel**4%
*“Theyre smoother and generally looking fresher”*
### **What buyers complain about **
**Value For Money**16%
*“too expensive”*
**Salt Content**11%
*“Its Epsom salt”*
**Sleep Quality**11%
*“so sleep doesnt come easy for me”*
**Pain Relief-Overall**9%
*“my feet ache so much”*
**Weight Heavy**5%
*“very heavy bag”*
**Leak-Proof**5%
*“the contents leaking a greasy film through the box”*
**Quality-Overall**5%
*“believe these are a better quality”*
**Smell**4%
*“There is no fragrance to them which I prefer”*
**Muscle Pain Relief**2%
*“muscle relaxant meds didn't work so Googled what good as can't go on another week like I have been and this item epsom salts came up I ordered these and used tonight and omg it was a different feeling like I can walk better it isn't 100 % cured the pain”*
**Size-Overall**2%
*“Just takes up space as the bag is so big”*
### **Top return reasons **
**Leak-Proof**35%
**Salt Content**23%
**Magnesium**13%
**Moist/Dry**7%
**Contamination**7%
**Size-Overall**3%
**Ease Of Use**3%
**Water Resistance**3%
**Ingredients-Overall**2%
**Language Issues**2%
## **Common questions**
- **Is magnesium bath salts profitable to sell on Amazon United Kingdom?**
- The niche generates £210K/yr across 10 tracked products. 90-day search growth is -36.3%. Flapen's verdict: Skip it (37/100).
- **How competitive is the magnesium bath salts niche?**
- 6 brands and 48 sellers compete. The top 5 products take 79% of clicks and top 5 brands hold 97% of demand.
- **What do buyers complain about in magnesium bath salts?**
- Top complaints mined from reviews: Value For Money, Salt Content, Sleep Quality. The return rate is 0.0%.
- **When does demand for magnesium bath salts peak?**
- Demand peaks in Jan; the busiest month runs 1.9× the quietest.
- **What does it cost to enter the magnesium bath salts niche?**
- Listings span £2.38–£21.04; the average listing price is £7.61 (sweet spot $15–$100). The average incumbent carries 2,373 reviews — the moat a new listing must climb.
## **Related niches in Beauty**
- 57 [**mens shampoo**](https://flapen.com/research/uk/beauty/mens-shampoo)£468K/yr+2.6%**Worth a look**- 57 [**bath sponge**](https://flapen.com/research/uk/beauty/bath-sponge)£584K/yr-1.2%**Worth a look**- 57 [**deodorant sticks for men**](https://flapen.com/research/uk/beauty/deodorant-sticks-for-men)£718K/yr+22.6%**Worth a look**- 57 [**deodorant womens**](https://flapen.com/research/uk/beauty/deodorant-womens)£1.1M/yr+24.5%**Launch it**- 57 [**birthday hampers for women**](https://flapen.com/research/uk/beauty/birthday-hampers-for-women)£171K/yr-15.2%**Worth a look**- 57 [**hand wash anti-bacterial**](https://flapen.com/research/uk/beauty/hand-wash-anti-bacterial)£2.0M/yr+6.0%**Launch it**[**All Beauty niches **](https://flapen.com/research/uk/beauty)