---
title: "So Slime — £21K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/toys-games/so-slime"
last_updated: "2026-07-31T12:49:21.970Z"
locale: en
meta:
description: "Niche score 43/100 · £21K/yr market · 48K searches/yr · £10.25 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 43/100 · £21K/yr market · 48K searches/yr · £10.25 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "So Slime — £21K/yr Amazon UK Niche (2026) - Flapen"
---
# **so slime**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 5Growth 28Conversion 52Competition 56Returns 98Price range 34Avg price 35Brand share 0Review moat 74Quality gap 70
**Returns**
**Incredible****0.5%**
return rate — above 5% kills the launch gate
**Review moat**
**Good****525.54**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Competition**
**Good****52%**
top-5 click share — leaders hold, buyers still browse
**Conversion**
**Good****4.2%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Okay****£10.25**
avg listing price — sweet spot $15–$100
**Price range**
**Okay****£3.47–£20.86**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Okay****+2.6%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****£21K**
£21K/yr · 48K searches
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, so slime is a £21K/yr Amazon United Kingdom market (48K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Oct–Nov–Dec. Verdict: Skip it — 43/100.
Data updated Jul 30, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **so slime market data**
- **Units sold / yr**
- **2K–3K**
- avg 0–100/product
- **Revenue / yr**
- **£21K–£26K**
- units × avg price
- **Conversion rate**
- **4.2%**
- **Avg BSR**
- **#189**
- **Page quality**
- **0%**
- **Prime**
- **96%**
- **Sponsored**
- **17%**
- **Out of stock**
- **4.9%**
- **Avg brand age**
- **31 months**
- **Avg seller age**
- **197 days**
## **Competition & brand share**
The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**5 **▼falling
**Sellers**
**46**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**52%**
Top 20: 97%
**Open market**
**0%**
- Canal Toys84% - So Slime Sensations9% - So Slime4% - YOPINSAND2% - Play-Doh1%
## **Demand & seasonality**
Weekly Amazon search volume, last 86 weeks — +2.6% search growth over the last 90 days.
4K3KSpike '25Black Friday '25Spike '26 seasonJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Oct, Nov, Dec · busiest ÷ quietest = 4.6×
[**Open Trend **](https://flapen.com/research/uk/toys-games/so-slime/trend)
## **Top so slime search terms**
- **so slime**34K/yr+10.0%3.6% conv. - **diy slime**3K/yr+1.2%0.3% conv. - **so slime diy**4K/yr-29.4%4.2% conv. - **slime diy**2K/yr+20.8%1.6% conv. - **so slime sensations**4K/yr-29.8%2.5% conv. [**All search terms **](https://flapen.com/research/uk/toys-games/so-slime/search-terms)
## **Top so slime 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%£8328%£2K12%£2K16%£3K101001K10K 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**Canal Toys - So Slime DIY - Slime Fluffy Case for Children - DIY Scented Fluffy Slime Kit with Shakers Powders and Decorations - Storage Carry Case Creative Activity 6 Years Plus - SSC206**Canal Toys**£9.99**4.1★77 rev](https://www.amazon.co.uk/dp/B0B781QPQW) [2**So Slime Flower Mini Garden | Slime Kit for Kids | Create & Decorate Scented Slimes with Charms | 6 Flower Pots & Mini Greenhouse Display | Kids Gift Age 6+**Canal Toys**£9.64**4.5★38 rev](https://www.amazon.co.uk/dp/B0G544Y6PS) [3**So Slime ASMR Surprise Box 20 Slime Dispenser Balls with Compounds & Decorations Vending Machine Unboxing Experience Sensory Mix & Match Toy Ages 6+**So Slime Sensations**£7.23**4.7★62 rev](https://www.amazon.co.uk/dp/B0FCMCMD8K) [4**So Slime Mixin sime bucket | Ready to Play Multicolour Slime Bucket | 3 colours availible comes with cute add-in decorations| Gift for kids 6+**Canal Toys**£3.47**4.3★2,256 rev](https://www.amazon.co.uk/dp/B088Q4P16X) [5**Canal Toys - So Slime - 10 Personalised Slime Kit - +100 Combinations - No Glue - Mix & Decorate - Accessories Included - DIY Set for Creative Fun - Gift for Children 6 Years + - SSC 184**Canal Toys**£6.85**4.5★2,019 rev](https://www.amazon.co.uk/dp/B09NYKT6DC)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**So Slime Flower Mini Garden | Slime Kit for Kids | Create & Decorate Scented Slimes with Charms | 6 Flower Pots & Mini Greenhouse Display | Kids Gift Age 6+**Canal Toys**£9.64**38 rev7mo ago](https://www.amazon.co.uk/dp/B0G544Y6PS) [**So Slime Premium Slime Experience | DIY kit with Clear Butter & Glossy Slime Set with Dyes Scents & Decorations | Make & Customise Your Own Slime | kids gift Age 6+**Canal Toys**£10.18**26 rev7mo ago](https://www.amazon.co.uk/dp/B0G5468R1Y) [**So Slime Mixin Bucket Slime Bucket with 2 Textured Slimes Charms & Decorations Kids gift Ages 6+ | Collect All 3 Styles (Styles may vary)**Canal Toys**£4.17**22 rev7mo ago](https://www.amazon.co.uk/dp/B0G5443N1W) [**Play-Doh Kawaii Mix & Play Set with 6 Compounds & Mix-Ins - Cloud Butter Foam & Super Stretch for Sensory Play Reusable Tubs & Accessories - Creative Play for Kids Ages 4+**Play-Doh**£16.62**179 rev1y ago](https://www.amazon.co.uk/dp/B0F2JJRZ7N) [**So Slime Yummy Twist & Slime Real Spinning Mixer and Bowl for Kids to Twist Mix and Create Colourful Slime Make 3 Fun Recipes or Mix and Match Your Own Sweet Slime Creations**Canal Toys**£15.74**179 rev1y ago](https://www.amazon.co.uk/dp/B0FFHGHN66)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**So Slime Premium Slime Experience | DIY kit with Clear Butter & Glossy Slime Set with Dyes Scents & Decorations | Make & Customise Your Own Slime | kids gift Age 6+**Canal Toys**£10.18**4.8★**▲ 384%**](https://www.amazon.co.uk/dp/B0G5468R1Y) [**Play-Doh Kawaii Mix & Play Set with 6 Compounds & Mix-Ins - Cloud Butter Foam & Super Stretch for Sensory Play Reusable Tubs & Accessories - Creative Play for Kids Ages 4+**Play-Doh**£16.62**4.6★**▲ 367%**](https://www.amazon.co.uk/dp/B0F2JJRZ7N) [**So Slime Flower Mini Garden | Slime Kit for Kids | Create & Decorate Scented Slimes with Charms | 6 Flower Pots & Mini Greenhouse Display | Kids Gift Age 6+**Canal Toys**£9.64**4.5★**▲ 334%**](https://www.amazon.co.uk/dp/B0G544Y6PS) [**So Slime Mixin Bucket Slime Bucket with 2 Textured Slimes Charms & Decorations Kids gift Ages 6+ | Collect All 3 Styles (Styles may vary)**Canal Toys**£4.17**4.0★**▲ 158%**](https://www.amazon.co.uk/dp/B0G5443N1W) [**So Slime Glitzy Glitz & Glam Slime Pot - decorate your own clear slime - add in metallic foil and decorations - So Glitzy**So Slime**£4.03**3.4★**▲ 136%**](https://www.amazon.co.uk/dp/B0DDTPZHHC)
**~~View all trending →~~**
## **What buyers say about so slime**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Fun/Entertainment Experience**27%
*“Good interactive play”*
**Quality-Overall**15%
*“The quality of this brands slime is better than the cheaper brands”*
**Gifting Purpose**11%
*“lovely gift”*
**Durability**7%
*“holds up well once its made”*
**Ease Of Use**7%
*“so easy to do”*
**Value For Money**6%
*“Good for the price”*
**Fluffiness**6%
*“Great slime my son loves this its his second tub he has ever got of this one”*
**Quick Drying**3%
*“most of the slimes have lasted really well without drying out compared to others we have used in the past”*
**Color**3%
*“nice colours”*
**Creativity**3%
*“creative kit thats great for sensory play”*
### **What buyers complain about **
**Adhesion/Stickiness**20%
*“Measured everything accurately way too sticky”*
**Value For Money**15%
*“Not worth the price”*
**Advertised Vs Actual Product**9%
*“Picture is misleading - contents is poor”*
**Strength**7%
*“mixer isn't strong enough”*
**Moist/Dry**7%
*“Extremely disappointed as the clay is dry”*
**Functionality-Overall**7%
*“Didn't work”*
**Fun/Entertainment Experience**6%
*“My kids found it boring”*
**Stretchability/Expandability/Elasticity**5%
*“not really stretchy”*
**Size-Overall**4%
*“It's very small”*
**Instructions/User Manual/Troubleshooting**3%
*“Poor instructions and poor slime”*
### **Top return reasons **
**Functionality-Overall**33%
**Adhesion/Stickiness**13%
**Size-Overall**9%
**Leak-Proof**9%
**Gifting Purpose**6%
**Quality-Overall**5%
**Defective Material/Parts**5%
**Advertised Vs Actual Product**3%
**Moist/Dry**3%
**Water Resistance**3%
## **Common questions**
- **Is so slime profitable to sell on Amazon United Kingdom?**
- The niche generates £21K/yr across 24 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is +2.6%. Flapen's verdict: Skip it (43/100).
- **How competitive is the so slime niche?**
- 5 brands and 46 sellers compete. The top 5 products take 52% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in so slime?**
- Top complaints mined from reviews: Adhesion/Stickiness, Value For Money, Advertised Vs Actual Product. The return rate is 0.5%.
- **When does demand for so slime peak?**
- Demand peaks in Oct–Nov–Dec; the busiest month runs 4.6× the quietest.
- **What does it cost to enter the so slime niche?**
- Listings span £3.47–£20.86; the average listing price is £10.25 (sweet spot $15–$100). The average incumbent carries 526 reviews — the moat a new listing must climb.
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