---
title: "Rainbow — £26K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/beauty/rainbow"
last_updated: "2026-08-09T17:01:19.498Z"
locale: en
meta:
description: "Niche score 45/100 · £26K/yr market · 148K searches/yr · £8.67 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 45/100 · £26K/yr market · 148K searches/yr · £8.67 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Rainbow — £26K/yr Amazon UK Niche (2026) - Flapen"
---
# **rainbow**
**Skip it**
A small market ($26K/yr) — this niche doesn't clear our bar today.
Market size 6Growth 15Conversion 25Competition 77Returns 99Price range 14Avg price 24Brand share 87Review moat 65Quality gap 43
**Returns**
**Incredible****0.3%**
return rate — above 5% kills the launch gate
**Brand share**
**Great****48%**
top-5 brand share — no brand owns this niche
**Competition**
**Great****38%**
top-5 click share — an open shelf
**Review moat**
**Good****888.37**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Okay****2.0%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Bad****£8.67**
avg listing price — sweet spot $15–$100
**Growth**
**Bad****-20.6%**
90-day search growth — must beat 0% to launch
**Price range**
**Bad****£0.64–£17.26**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Bad****£26K**
£26K/yr · 148K searches
According to Flapen's Amazon United Kingdom niche tracking, rainbow is a £26K/yr Amazon United Kingdom market (148K searches/yr). The top 5 brands hold 48% of demand. Demand peaks in Dec. Verdict: Skip it — 45/100.
Data updated Jul 18, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **rainbow market data**
- **Units sold / yr**
- **3K–4K**
- avg 100–250/product
- **Revenue / yr**
- **£26K–£35K**
- units × avg price
- **Conversion rate**
- **2.0%**
- **Avg BSR**
- **#424**
- **Page quality**
- **0%**
- **Prime**
- **98%**
- **Sponsored**
- **86%**
- **Out of stock**
- **4.8%**
- **Avg brand age**
- **35 months**
- **Avg seller age**
- **180 days**
## **Competition & brand share**
Clicks spread well past the top 5 (38% combined) — an open shelf where new products get seen.
**Brands**
**37 **▼falling
**Sellers**
**91**
**Top-5 brand share**
**48%**
Top 20: 85%
**Top-5 click share**
**38%**
Top 20: 72%
**Open market**
**49%**
- ZIMPLI28% - AURORA6% - Sahunfri6% - mtuihfo5% - Elfinbay4% - Kiuiom3%
## **Demand & seasonality**
Weekly Amazon search volume, last 82 weeks — -20.6% search growth over the last 90 days.
5K3KSpike '25Black Friday '25Holiday '25Spike '26 seasonJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Dec · busiest ÷ quietest = 2.1×
[**Open Trend **](https://flapen.com/research/uk/beauty/rainbow/trend)
## **Top rainbow search terms**
- **rainbow**110K/yr-20.4%0.6% conv. - **rainbow gifts**17K/yr+22.4%0.9% conv. - **rainbow bath bombs for kids**8K/yr-28.1%6.2% conv. - **rainbows**6K/yr-22.6%0.6% conv. - **rainbow bath bomb**8K/yr-68.1%10.1% conv. [**All search terms **](https://flapen.com/research/uk/beauty/rainbow/search-terms)
## **Top rainbow 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%4%£1K8%£2K12%£3K16%£4K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**ZIMPLI - Large Cloud Rainbow Baff Bombz Create a Rainbow Effect fizzing bathtime Adventure Bath Bomb Fizzing Fun for Children 4 5 6 7 8 9**ZIMPLI**£3.34**4.5★1,229 rev](https://www.amazon.co.uk/dp/B0BT253KPS) [2**ZIMPLI - 3 x Large Cloud Rainbow Baff Bombz Create a Rainbow Effect fizzing bathtime Adventure Bubble Bath Bomb Fizzers Xmas Gift for Kids**ZIMPLI**£7.42**4.5★1,622 rev](https://www.amazon.co.uk/dp/B08MXVM4JL) [3**Aurora 33577 Palm Pals Vivi Rainbow 5In Soft Toy Pink Purple Yellow**AURORA**£6.54**4.6★489 rev](https://www.amazon.co.uk/dp/B0928RD9CY) [4**3 Pairs Rainbow Socks Pride Striped Calf Socks Breathable Casual Fashion Colourful LGBTQ Accessories for Women Girls Men Gifts**mtuihfo**£4.98**4.4★41 rev](https://www.amazon.co.uk/dp/B0F268Y5R2) [5**Sahunfri 4 Pairs Rainbow Socks Unisex Comfortable Pride Socks with Reinforced Heel Pride Gift for Men Women Celebration Support Casual Wear (UK Alpha One Size Regular Regular 2 Balck+2 White)**Sahunfri**£6.91**4.8★32 rev](https://www.amazon.co.uk/dp/B0F21KQM26)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Rainbow Dumpling Squishy Big Mystery Dumplings Squishies Box Cute Bao Bun Fidget Real Office Desk Decor Soft Sensory Squeeze Ball with Steamer for Anxiety Stress Relief Surprise Gift (Rainbow)**nnOuOnn**£8.36**36 rev3mo ago](https://www.amazon.co.uk/dp/B0GTKXH6FD) [**KAKU NANU Girls Pyjamas Set Kids Childrens Pjs Girls Gifts Pink Rainbow 3 4 Years**KAKU NANU**£11.29**18 rev1y ago](https://www.amazon.co.uk/dp/B0FGJH6MY3) [**3 Pairs Rainbow Socks Pride Striped Calf Socks Breathable Casual Fashion Colourful LGBTQ Accessories for Women Girls Men Gifts**mtuihfo**£4.98**41 rev1y ago](https://www.amazon.co.uk/dp/B0F268Y5R2) [**Sahunfri 4 Pairs Rainbow Socks Unisex Comfortable Pride Socks with Reinforced Heel Pride Gift for Men Women Celebration Support Casual Wear (UK Alpha One Size Regular Regular 2 Balck+2 White)**Sahunfri**£6.91**32 rev1y ago](https://www.amazon.co.uk/dp/B0F21KQM26) [**Elfinbay Cloud Rainbow Bath Bombs for Girls 2 Large Handmade Bath Bombs for Kids Bubble Bath Safe Kid Bath Bomb Creates Multi-Colour Special Effect Birthday Gifts for Women Kids Stocking Fillers**Elfinbay**£7.38**715 rev1y ago](https://www.amazon.co.uk/dp/B0CG8VBD8G)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Rainbow Dumpling Squishy Big Mystery Dumplings Squishies Box Cute Bao Bun Fidget Real Office Desk Decor Soft Sensory Squeeze Ball with Steamer for Anxiety Stress Relief Surprise Gift (Rainbow)**nnOuOnn**£8.36**2.5★**▲ 328%**](https://www.amazon.co.uk/dp/B0GTKXH6FD) [**Ceruwum Unicorn Hoodies for Girls Unicorn Hooded Sweatshirt Oversized Hoodie Blanket for Kids (Light Rainbow 10-11 Years)**Ceruwum**£15.86**4.7★**▲ 324%**](https://www.amazon.co.uk/dp/B0D8Q3SFHL) [**Marchare Girls Seamless Crew Cotton Socks Kids Casual Socks School Socks Rainbow Stripes Color A 5 Pack 6-8 Years**Marchare**£13.41**4.5★**▲ 313%**](https://www.amazon.co.uk/dp/B0B8CJ2P2B) [**JOYIN Rainbow Beach Balls(12 Pack) 12/30 cm Inflatable Swimming Pool Toys for Summer Water Games Kids Birthday Party Supplies Combo Set Include Inflatable Beach Balls**JOYIN**£7.86**4.4★**▲ 304%**](https://www.amazon.co.uk/dp/B07NWR7HKD) [**Piefry Unicorn Dressing Gown for Girls - Soft Hooded Robe Sleepwear With Slippers Gifts for Girls (Rainbow Stars 10-11 Years)**Piefry**£17.26**4.6★**▲ 278%**](https://www.amazon.co.uk/dp/B0D926H8FZ)
**~~View all trending →~~**
## **What buyers say about rainbow**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**15%
*“Looks like it is beautifully made”*
**Smell**13%
*“Good bye for the money, smells lovely, present for granddaughter She loves them”*
**Color**12%
*“Vibrant colours”*
**Gifting Purpose**9%
*“Fun gift”*
**Value For Money**8%
*“Good value”*
**Fun/Entertainment Experience**7%
*“Good fun”*
**Advertised Vs Actual Product**3%
*“As described”*
**Size-Overall**2%
*“Great size”*
**Soft Feel**2%
*“Kind and gentle to skin”*
**Strength**2%
*“are very strong”*
### **What buyers complain about **
**Color**20%
*“Colour rubs off”*
**Size-Overall**12%
*“just not the right size for what we were wanting it for”*
**Advertised Vs Actual Product**10%
*“very deceiving video”*
**Quality-Overall**6%
*“Build quality is basic”*
**Durability**6%
*“just fell apart”*
**Functionality-Overall**6%
*“didn't work very well - expected it to fizz around to make the rainbow line”*
**Value For Money**5%
*“Theyre expensive”*
**Smell**5%
*“Smell is not strong at all as others have described”*
**Shrinkage Resistance**4%
*“In reality, once the unicorn has hatched out, and you have kept it in the water to grow, once you take it out it shrinks back down”*
**Strap/String Quality**2%
*“The string came out the holes within 24 hours”*
### **Top return reasons **
**Size-Overall**27%
**Color**15%
**Quality-Overall**8%
**Advertised Vs Actual Product**7%
**Gifting Purpose**6%
**Defective Material/Parts**6%
**Smell**5%
**Age Suitability**2%
**Functionality-Overall**2%
**Ingredients-Overall**2%
## **Common questions**
- **Is rainbow profitable to sell on Amazon United Kingdom?**
- The niche generates £26K/yr across 49 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is -20.6%. Flapen's verdict: Skip it (45/100).
- **How competitive is the rainbow niche?**
- 37 brands and 91 sellers compete. The top 5 products take 38% of clicks and top 5 brands hold 48% of demand.
- **What do buyers complain about in rainbow?**
- Top complaints mined from reviews: Color, Size-Overall, Advertised Vs Actual Product. The return rate is 0.3%.
- **When does demand for rainbow peak?**
- Demand peaks in Dec; the busiest month runs 2.1× the quietest.
- **What does it cost to enter the rainbow niche?**
- Listings span £0.64–£17.26; the average listing price is £8.67 (sweet spot $15–$100). The average incumbent carries 888 reviews — the moat a new listing must climb.
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