---
title: "Baby Magnesium — £23K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/baby-products/baby-magnesium"
last_updated: "2026-08-11T02:44:59.482Z"
locale: en
meta:
description: "Niche score 35/100 · £23K/yr market · 28K searches/yr · £8.37 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 35/100 · £23K/yr market · 28K searches/yr · £8.37 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Baby Magnesium — £23K/yr Amazon UK Niche (2026) - Flapen"
---
# **baby magnesium**
**Skip it**
Soft demand (-45.4% this quarter) — this niche doesn't clear our bar today.
Market size 6Growth 2Conversion 86Competition 13Returns 100Price range 16Avg price 23Brand share 12Review moat 52Quality gap 78
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****9.8%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Good****1,427.1**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Bad****£8.37**
avg listing price — sweet spot $15–$100
**Price range**
**Bad****£5.89–£16.68**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Bad****84%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****95%**
top-5 brand share — brand-locked demand
**Market size**
**Bad****£23K**
£23K/yr · 28K searches
**Growth**
**Bad****-45.4%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, baby magnesium is a £23K/yr Amazon United Kingdom market (28K searches/yr). The top 5 brands hold 95% of demand. Demand peaks in Jan–Feb. Verdict: Skip it — 35/100.
Data updated Jul 18, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **baby magnesium market data**
- **Units sold / yr**
- **3K–3K**
- avg 100–250/product
- **Revenue / yr**
- **£21K–£25K**
- units × avg price
- **Conversion rate**
- **9.8%**
- **Avg BSR**
- **#170**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **0.6%**
- **Avg brand age**
- **30 months**
- **Avg seller age**
- **187 days**
## **Competition & brand share**
The top 5 products capture 84% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**7 **▼falling
**Sellers**
**40**
**Top-5 brand share**
**95%**
Top 20: 100%
**Top-5 click share**
**84%**
Top 20: 100%
**Open market**
**2%**
- BetterYou62% - ZyranovaE17% - Epigenetics8% - Feather & Down5% - NaturallyMum3% - Bieyoc2% - Open — no brand owns it (1 brand, 2%)
## **Demand & seasonality**
Weekly Amazon search volume, last 75 weeks — -45.4% search growth over the last 90 days.
2K1KSpike '25Spike '26 seasonMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Jan, Feb · busiest ÷ quietest = 2.3×
[**Open Trend **](https://flapen.com/research/uk/baby-products/baby-magnesium/trend)
## **Top baby magnesium search terms**
- **magnesium spray kids**5K/yr-33.2%7.5% conv. - **magnesium cream for kids**7K/yr-60.3%12.4% conv. - **baby magnesium**3K/yr-28.3%5.1% conv. - **kids magnesium spray**2K/yr-29.0%10.6% conv. - **magnesium for babies**3K/yr-60.4%4.8% conv. - **magnesium spray for kids**2K/yr-43.7%6.9% conv. - **better you magnesium spray kids**2K/yr-37.3%9.5% conv. - **magnesium sleep cream kids**1K/yr-22.9%9.7% conv. - **magnesium butter for kids**1K/yr-63.7%9.5% conv. [**All search terms **](https://flapen.com/research/uk/baby-products/baby-magnesium/search-terms)
## **Top baby magnesium products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%15%£3K30%£7K45%£10K60%£14K101001K10K 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**BetterYou Magnesium Sleep Kids Body Lotion Pure Magnesium Chloride with Lavender and Chamomile Essential Oils Paediatrician Approved Dermatologically Tested and Suitable for Sensitive Skin**BetterYou**£6.68**4.2★1,592 rev](https://www.amazon.co.uk/dp/B07F1VZ56Z) [2**Magnesium Cream for Kids Magnesium Lotion for Sleep Natural Bedtime Lotion Relaxation & Relieves Stress Natural Body Butter for Deep Hydration - Safe for Kids**ZyranovaE**£6.65**4.1★101 rev](https://www.amazon.co.uk/dp/B0F5WT5G13) [3**BetterYou Magnesium Sleep Body Spray Made with Zechstein Magnesium Chloride and Essential Oils Magnesium Supplement Natural Sleep Aid Palm-Oil Free 100ml (600 Sprays)**BetterYou**£7.34**4.2★5,931 rev](https://www.amazon.co.uk/dp/B002VPDX56) [4**Magnesium for Kids Children & Baby 30ml | Supports Sleep & Relaxation Helps Calm & Focus Supplements for 0-11 Years | Bones Teeth & Energy | Sugar & Flavouring Free UK Made Vegan**Epigenetics**£13.31**4.2★137 rev](https://www.amazon.co.uk/dp/B0D3M95PR3) [5**Feather & Down Magnesium Butter for Sleep - Lavender & Chamomile Soothing Body Butter (300ml) to support relaxation in your self care routine.**Feather & Down**£5.89**4.5★3,623 rev](https://www.amazon.co.uk/dp/B09B2HVKH6)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Magnesium Cream for Kids Magnesium Lotion for Sleep Natural Bedtime Lotion Relaxation & Relieves Stress Natural Body Butter for Deep Hydration - Safe for Kids**ZyranovaE**£6.65**101 rev1y ago](https://www.amazon.co.uk/dp/B0F5WT5G13) [**Magnesium Lotion for Kids Magnesium Cream for Sleep Calm Magnesium Cream Baby Magnesium Lotion With Lavender Essential Oils Body Skin Care for Relaxation Muscle Comfort**MrCuvaryas**£6.58**16 rev1y ago](https://www.amazon.co.uk/dp/B0DZHSZ8J4) [**Magnesium Spray Magnesium Oil for Feet Pure Magnesium Oil Spray for Sleep Topical Magnesium Spray 100% Pure and Organic Glass Bottle Travel Size 60ml**Bieyoc**£6.98**512 rev2y ago](https://www.amazon.co.uk/dp/B0D6B4B11P) [**Magnesium for Kids Children & Baby 30ml | Supports Sleep & Relaxation Helps Calm & Focus Supplements for 0-11 Years | Bones Teeth & Energy | Sugar & Flavouring Free UK Made Vegan**Epigenetics**£13.31**137 rev2y ago](https://www.amazon.co.uk/dp/B0D3M95PR3) [**Kids Magnesium Bedtime Lotion for Better Sleep | All-Natural Sleeping Aid for Children | Alternative to Melatonin | Lavender & Chamomile Essential Oil | 120ml**NaturallyMum**£16.68**700 rev4y ago](https://www.amazon.co.uk/dp/B0B2PQYS2R)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**BetterYou Magnesium Sensitive Body Spray Pure Clean and Natural Source of Chlorides Spray Vegan & Palm-Oil Free 100 ml (600 Sprays)**BetterYou**£7.12**4.4★**▲ 79%**](https://www.amazon.co.uk/dp/B00P2N1T4G) [**BetterYou Magnesium Sleep Body Spray Made with Zechstein Magnesium Chloride and Essential Oils Magnesium Supplement Natural Sleep Aid Palm-Oil Free 100ml (600 Sprays)**BetterYou**£7.34**4.2★**▲ 47%**](https://www.amazon.co.uk/dp/B002VPDX56) [**Magnesium Cream for Kids Magnesium Lotion for Sleep Natural Bedtime Lotion Relaxation & Relieves Stress Natural Body Butter for Deep Hydration - Safe for Kids**ZyranovaE**£6.65**4.1★**— 9%**](https://www.amazon.co.uk/dp/B0F5WT5G13) [**BetterYou Magnesium Sleep Kids Body Lotion Pure Magnesium Chloride with Lavender and Chamomile Essential Oils Paediatrician Approved Dermatologically Tested and Suitable for Sensitive Skin**BetterYou**£6.68**4.2★**— 1%**](https://www.amazon.co.uk/dp/B07F1VZ56Z) [**Magnesium for Kids Children & Baby 30ml | Supports Sleep & Relaxation Helps Calm & Focus Supplements for 0-11 Years | Bones Teeth & Energy | Sugar & Flavouring Free UK Made Vegan**Epigenetics**£13.31**4.2★**— 4%**](https://www.amazon.co.uk/dp/B0D3M95PR3)
**~~View all trending →~~**
## **What buyers say about baby magnesium**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Smell**40%
*“smells divine”*
**Sleep Quality**14%
*“Better nights sleep”*
**Value For Money**5%
*“Worth every single penny”*
**Soft Feel**5%
*“Soft and gentle”*
**Moist/Dry**5%
*“Lovely Moisturiser & Smells lovely”*
**Quality-Overall**4%
*“Good quality product”*
**Efficiency**3%
*“Works well”*
**Thickness**2%
*“It also lasts ages as the consistency is thick”*
**Magnesium**2%
*“After a family friend suggested magnesium lotion we thought we would give it a go”*
**Comfort-Overall**2%
*“Calming”*
### **What buyers complain about **
**Smell**12%
*“No fragrance at all”*
**Functionality-Overall**12%
*“Doesn't work”*
**Allergies**12%
*“Couldnt use the product as made my skin burn and itch”*
**Sleep Quality**10%
*“having trouble sleeping”*
**Value For Money**6%
*“Since money is tight”*
**Moist/Dry**6%
*“You need a good moisturiser”*
**Magnesium**5%
*“not as much magnesium as another one from this brand that I have bought”*
**Adhesion/Stickiness**3%
*“Sticky”*
**Size-Overall**3%
*“The tub is also quite large at 300 ml”*
**Pain Relief-Overall**3%
*“I have a very painfull shoulder”*
### **Top return reasons **
**Smell**20%
**Advertised Vs Actual Product**20%
**Functionality-Overall**20%
**Comfort-Overall**7%
**Value For Money**7%
**Dilute/Watery**7%
**Skin Health**7%
**Size-Overall**7%
**Leak-Proof**7%
## **Common questions**
- **Is baby magnesium profitable to sell on Amazon United Kingdom?**
- The niche generates £23K/yr across 10 tracked products. 90-day search growth is -45.4%. Flapen's verdict: Skip it (35/100).
- **How competitive is the baby magnesium niche?**
- 7 brands and 40 sellers compete. The top 5 products take 84% of clicks and top 5 brands hold 95% of demand.
- **What do buyers complain about in baby magnesium?**
- Top complaints mined from reviews: Smell, Functionality-Overall, Allergies. The return rate is 0.1%.
- **When does demand for baby magnesium peak?**
- Demand peaks in Jan–Feb; the busiest month runs 2.3× the quietest.
- **What does it cost to enter the baby magnesium niche?**
- Listings span £5.89–£16.68; the average listing price is £8.37 (sweet spot $15–$100). The average incumbent carries 1,427 reviews — the moat a new listing must climb.
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