---
title: "Bath Bomb Making Kit — £70K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/beauty/bath-bomb-making-kit"
last_updated: "2026-08-07T17:54:33.800Z"
locale: en
meta:
description: "Niche score 42/100 · £70K/yr market · 93K searches/yr · £13.73 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 42/100 · £70K/yr market · 93K searches/yr · £13.73 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Bath Bomb Making Kit — £70K/yr Amazon UK Niche (2026) - Flapen"
---
# **bath bomb making kit**
**Skip it**
Soft demand (-24.5% this quarter) — this niche doesn't clear our bar today.
Market size 17Growth 13Conversion 62Competition 21Returns 98Price range 52Avg price 64Brand share 26Review moat 78Quality gap 63
**Returns**
**Incredible****0.4%**
return rate — above 5% kills the launch gate
**Review moat**
**Great****449**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Good****£13.73**
avg listing price — sweet spot $15–$100
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Good****5.5%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Good****£6.70–£24.07**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Okay****89%**
top-5 brand share — brands hold most of the demand
**Competition**
**Bad****75%**
top-5 click share — a locked-up shelf
**Market size**
**Bad****£70K**
£70K/yr · 93K searches
**Growth**
**Bad****-24.5%**
90-day search growth — must beat 0% to launch
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=uk&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United Kingdom niche tracking, bath bomb making kit is a £70K/yr Amazon United Kingdom market (93K searches/yr). The top 5 brands hold 89% of demand. Demand peaks in Oct–Nov–Dec. Verdict: Skip it — 42/100.
Data updated Jul 18, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **bath bomb making kit market data**
- **Units sold / yr**
- **5K–6K**
- avg 100–250/product
- **Revenue / yr**
- **£69K–£82K**
- units × avg price
- **Conversion rate**
- **5.5%**
- **Avg BSR**
- **#575**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **58%**
- **Out of stock**
- **4.9%**
- **Avg brand age**
- **39 months**
- **Avg seller age**
- **211 days**
## **Competition & brand share**
The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**8 **▼falling
**Sellers**
**29**
**Top-5 brand share**
**89%**
Top 20: 100%
**Top-5 click share**
**75%**
Top 20: 100%
**Open market**
**7%**
- So Bomb DIY36% - Canal Toys26% - Science4you10% - Limino9% - Klever Kits8% - Vezerd4% - Open — no brand owns it (2 brands, 7%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -24.5% search growth over the last 90 days.
6K4KSpike '24Holiday '24Spike '25Black Friday '25 seasonSepDecMarJunAugNovMarMay
Peak months: Oct, Nov, Dec · busiest ÷ quietest = 5.4×
[**Open Trend **](https://flapen.com/research/uk/beauty/bath-bomb-making-kit/trend)
## **Top bath bomb making kit search terms**
- **bath bomb making kit**37K/yr-17.0%3.1% conv. - **bath bomb kit**14K/yr-28.2%1.8% conv. - **make your own bath bomb kit kids**12K/yr-26.5%3.4% conv. - **bath bomb making kit for kids**13K/yr-36.3%4.5% conv. - **bath bomb maker**6K/yr-15.6%3.0% conv. - **bath bomb kit for kids**4K/yr-34.3%5.7% conv. - **make your own bath bombs**4K/yr-36.8%3.3% conv. - **so bomb diy bath bomb kit**4K/yr-29.0%8.4% conv. [**All search terms **](https://flapen.com/research/uk/beauty/bath-bomb-making-kit/search-terms)
## **Top bath bomb making kit 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%10%£7K20%£14K30%£21K40%£28K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 12 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**So Bomb DIY Marble Bath Bomb Factory | Make 10 Scented Bath Bombs with Mixer & Moulds | Create Marble Designs | Gift for Kids**So Bomb DIY**£15.36**4.3★31 rev](https://www.amazon.co.uk/dp/B0DR2L56RZ) [2**Canal Toys - DIY Bath Bomb Creative Kit - Make Your Own Multicolour and Scented Effervescent Bath Bombs - Children Manual Activity - Creative Leisure and Relaxation Gift Set**Canal Toys**£6.70**4.7★159 rev](https://www.amazon.co.uk/dp/B09CKWZ9KH) [3**12 Pieces Bath Bomb Mould Set with Soap Dyes Shrink Wrap Bags - DIY Bath Bombs Making Supplies Kit Food Grade Skin Safe Bath Bomb Dye for Soap Coloring Crafting Fizzles - with Instructions**Limino**£11.09**4.0★479 rev](https://www.amazon.co.uk/dp/B08744YG1R) [4**Klever Kits Make Your Own Soap Kit and Bath Bomb Soap Making Kit for Kids STEM Science Kits DIY Craft for Kids Girls Gift Age 6 7 8 9 10 11 12 Years Gift for Birthday Christmas Halloween**Klever Kits**£20.06**4.5★757 rev](https://www.amazon.co.uk/dp/B08HCLF62Z) [5**Science4you Bath Bombs for Kids +8 Make your Own Bath Bombs Educational Science Kits: 6 Cosmetic Experiments Stem Toys Creative Gift Ideal to Birthday Easter Christmas for Girls Ages 7 8 9 10+**Science4you**£17.78**4.3★1,276 rev](https://www.amazon.co.uk/dp/B09Y979PTX)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Bath Bomb Making Kit Vezerd DIY Bath Bombs for Women Make Your Own SPA Products Soap Making Kit with Stainless Steel Molds Bath Foam Bath & Bathing Shower Accessories Gifts for Girls Women**Vezerd**£24.07**3 rev7mo ago](https://www.amazon.co.uk/dp/B0G5N8KZXL) [**Science4you Bath Potions for Kids +6 Potions Making Kit Bath Bombs Educational Science Kits: 3 Bath Experiments Stem Toys Cosmetic Gift Ideal to Birthday Easter Christmas for Girls Age 6 7 8+**Science4you**£12.29**44 rev1y ago](https://www.amazon.co.uk/dp/B0CBDB8K3D) [**FIREKOTOKids Bath Bombs kit - 6pcs Bubble Bottles & 2pcs Surprise Box Toy Interactive Science Toys for Kids Fun Bubble Bath giftIdea Birthday Gifts for Girls Boys-8-Pack**FIREKOTO**£11.50**139 rev1y ago](https://www.amazon.co.uk/dp/B0F8W76P5N) [**So Bomb DIY Marble Bath Bomb Factory | Make 10 Scented Bath Bombs with Mixer & Moulds | Create Marble Designs | Gift for Kids**So Bomb DIY**£15.36**31 rev1y ago](https://www.amazon.co.uk/dp/B0DR2L56RZ) [**Klever Kits Make Your Own Soap Kit and Bath Bomb Soap Making Kit for Kids STEM Science Kits DIY Craft for Kids Girls Gift Age 6 7 8 9 10 11 12 Years Gift for Birthday Christmas Halloween**Klever Kits**£20.06**757 rev2y ago](https://www.amazon.co.uk/dp/B08HCLF62Z)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Bath Bomb Making Kit Vezerd DIY Bath Bombs for Women Make Your Own SPA Products Soap Making Kit with Stainless Steel Molds Bath Foam Bath & Bathing Shower Accessories Gifts for Girls Women**Vezerd**£24.07**4.6★**▲ 252%**](https://www.amazon.co.uk/dp/B0G5N8KZXL) [**So Bomb DIY Marble Bath Bomb Factory | Make 10 Scented Bath Bombs with Mixer & Moulds | Create Marble Designs | Gift for Kids**So Bomb DIY**£15.36**4.3★**▲ 59%**](https://www.amazon.co.uk/dp/B0DR2L56RZ) [**Science4you Bath Potions for Kids +6 Potions Making Kit Bath Bombs Educational Science Kits: 3 Bath Experiments Stem Toys Cosmetic Gift Ideal to Birthday Easter Christmas for Girls Age 6 7 8+**Science4you**£12.29**4.5★**▲ 19%**](https://www.amazon.co.uk/dp/B0CBDB8K3D) [**Science4you Bath Bombs for Kids +8 Make your Own Bath Bombs Educational Science Kits: 6 Cosmetic Experiments Stem Toys Creative Gift Ideal to Birthday Easter Christmas for Girls Ages 7 8 9 10+**Science4you**£17.78**4.3★**— 4%**](https://www.amazon.co.uk/dp/B09Y979PTX) [**Klever Kits Make Your Own Soap Kit and Bath Bomb Soap Making Kit for Kids STEM Science Kits DIY Craft for Kids Girls Gift Age 6 7 8 9 10 11 12 Years Gift for Birthday Christmas Halloween**Klever Kits**£20.06**4.5★**— 4%**](https://www.amazon.co.uk/dp/B08HCLF62Z)
**~~View all trending →~~**
## **What buyers say about bath bomb making kit**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Fun/Entertainment Experience**42%
*“Good fun”*
**Gifting Purpose**20%
*“Great present”*
**Quality-Overall**8%
*“Decent enough”*
**Smell**7%
*“The resulting spheres had smooth surfaces, and when dropped into the bathtub, they hissed and bubbled, releasing a faint lavender scent—the sense of accomplishment was immense”*
**Creativity**4%
*“She loved it, really creative and does activities with Mum so I knew it would get used”*
**Value For Money**4%
*“Good value for money”*
**Ease Of Use**2%
*“easy to use”*
**Color**2%
*“They are very vibrant”*
**Mess Free**2%
*“Not too messy either”*
**Recycle/Reuse**1%
*“Build quality: Good selection of reusable accessories”*
### **What buyers complain about **
**Color**29%
*“Colour was dull”*
**Value For Money**20%
*“Not worth money imo”*
**Durability**8%
*“the bombs only last about one minute”*
**Size-Overall**6%
*“They are basically small bath bombs in a plastic paintbrush”*
**Side Effects**6%
*“Made me and my daughters cough a lot while using it”*
**Quality-Overall**5%
*“This item is terrible”*
**Advertised Vs Actual Product**5%
*“I wish it worked like the pictures”*
**Functionality-Overall**4%
*“Didn't work”*
**Inflation/Deflation**3%
*“they do not fizz”*
**Instructions/User Manual/Troubleshooting**1%
*“The instructions are a bit conservative; in practice, add a tiny bit less water, erring on the side of slightly drier rather than wetter”*
### **Top return reasons **
**Quality-Overall**20%
**Gifting Purpose**15%
**Functionality-Overall**11%
**Defective Material/Parts**9%
**Leak-Proof**8%
**Value For Money**8%
**Advertised Vs Actual Product**6%
**Smell**5%
**Adhesion/Stickiness**4%
**Product Condition**4%
## **Common questions**
- **Is bath bomb making kit profitable to sell on Amazon United Kingdom?**
- The niche generates £70K/yr across 12 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -24.5%. Flapen's verdict: Skip it (42/100).
- **How competitive is the bath bomb making kit niche?**
- 8 brands and 29 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 89% of demand.
- **What do buyers complain about in bath bomb making kit?**
- Top complaints mined from reviews: Color, Value For Money, Durability. The return rate is 0.4%.
- **When does demand for bath bomb making kit peak?**
- Demand peaks in Oct–Nov–Dec; the busiest month runs 5.4× the quietest.
- **What does it cost to enter the bath bomb making kit niche?**
- Listings span £6.70–£24.07; the average listing price is £13.73 (sweet spot $15–$100). The average incumbent carries 449 reviews — the moat a new listing must climb.
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