magnesium bath salts
Skip itSoft demand (-36.3% this quarter) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 6% kills the launch gate
Conversion
Incredible12.6%search→purchase rate — share of searches ending in a sale
Market size
Okay£210K£210K/yr · 220K searches
Review moat
Okay2,372.6avg incumbent reviews — the moat a new listing must climb
Price range
Okay£2.38–£21.04cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Avg price
Bad£7.61avg listing price — sweet spot $15–$100
Competition
Bad79%top-5 click share — a locked-up shelf
Brand share
Bad97%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
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.Peak months: Jan · busiest ÷ quietest = 1.9×
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 10 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Help Ease Physical Tension & Feel Soothed Calm & Renewed. Promotes Relaxation & Sleep. 100% Pure & Natural Mineral Salt
Westlab£3.414.8★839 rev
BetterYou Magnesium Original Bath Flakes Natural Source of Zechstein Magnesium Mineral Bath Flakes Cleansing Bath Salts Vegan & Palm-Oil Free 1kg
BetterYou£6.024.7★4,547 rev
Hexeal Magnesium Flakes 5kg 5kg Bucket of Magnesium Flakes to Soothe Muscles Joints & Aches for Bathing Gardening & Beauty Household & Commercial Use
Hexeal£11.304.5★357 rev
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£5.084.6★8,992 rev
BetterYou Magnesium Sleep Mineral Bath Flakes | Zechstein Magnesium Infused with Lavender & Chamomile to Soothe Aching Muscles | Relaxing Essential Oils for Deep Sleep | 1kg
BetterYou£6.014.7★613 rev
Newest
by launch date
Elysium Spa 100% Natural Mineral Salts - Magnesium Flakes (500g)
ELYSIUM SPA£2.57138 rev
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£12.38343 rev
BetterYou Magnesium Sleep Mineral Bath Flakes | Zechstein Magnesium Infused with Lavender & Chamomile to Soothe Aching Muscles | Relaxing Essential Oils for Deep Sleep | 1kg
BetterYou£6.01613 rev
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£5.87328 rev
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£5.088,992 rev
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£2.384.8★
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£12.384.7★
Help Ease Physical Tension & Feel Soothed Calm & Renewed. Promotes Relaxation & Sleep. 100% Pure & Natural Mineral Salt
Westlab£3.414.8★
Hexeal Magnesium Flakes 5kg 5kg Bucket of Magnesium Flakes to Soothe Muscles Joints & Aches for Bathing Gardening & Beauty Household & Commercial Use
Hexeal£11.304.5★
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£21.044.7★
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Great product very pleased with purchase”
“the salts are clean”
“Worth the”
“Helps with muscle soreness”
“As described”
“These magnesium flakes are absolutely wonderful”
“It does help with easing pain”
“Relax”
“Excellent if you want a good nights sleep”
“Theyre smoother and generally looking fresher”
What buyers complain about
“too expensive”
“Its Epsom salt”
“so sleep doesnt come easy for me”
“my feet ache so much”
“very heavy bag”
“the contents leaking a greasy film through the box”
“believe these are a better quality”
“There is no fragrance to them which I prefer”
“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”
“Just takes up space as the bag is so big”
Top return reasons
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.
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