---
title: "Slime Kit — £158K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/toys-games/slime-kit"
last_updated: "2026-07-31T11:20:22.614Z"
locale: en
meta:
description: "Niche score 51/100 · £158K/yr market · 287K searches/yr · £13.07 avg price. Soft demand (-4.2% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 51/100 · £158K/yr market · 287K searches/yr · £13.07 avg price. Soft demand (-4.2% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Slime Kit — £158K/yr Amazon UK Niche (2026) - Flapen"
---
# **slime kit**
**Worth a look**
Shows low returns (0.4%), but soft demand (-4.2% this quarter) keeps it on the watch list.
Market size 33Growth 23Conversion 52Competition 58Returns 98Price range 38Avg price 59Brand share 41Review moat 55Quality gap 75
**Returns**
**Incredible****0.4%**
return rate — above 5% kills the launch gate
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Good****£13.07**
avg listing price — sweet spot $15–$100
**Competition**
**Good****50%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Good****1,319.2**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Good****4.2%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Okay****80%**
top-5 brand share — brands hold most of the demand
**Price range**
**Okay****£3.17–£22.36**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Okay****£158K**
£158K/yr · 287K searches
**Growth**
**Bad****-4.2%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, slime kit is a £158K/yr Amazon United Kingdom market (287K searches/yr). The top 5 brands hold 80% of demand. Demand peaks in Oct–Nov–Dec. Verdict: Worth a look — 51/100.
Data updated Jul 30, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **slime kit market data**
- **Units sold / yr**
- **13K–15K**
- avg 250–500/product
- **Revenue / yr**
- **£163K–£196K**
- units × avg price
- **Conversion rate**
- **4.2%**
- **Avg BSR**
- **#85**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **77%**
- **Out of stock**
- **6.1%**
- **Avg brand age**
- **31 months**
- **Avg seller age**
- **200 days**
## **Competition & brand share**
The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**15 **▼falling
**Sellers**
**54**
**Top-5 brand share**
**80%**
Top 20: 100%
**Top-5 click share**
**50%**
Top 20: 88%
**Open market**
**17%**
- YOPINSAND31% - iKidiki26% - Elmer's17% - Original Stationery4% - Galt3% - Funewest3% - Open — no brand owns it (9 brands, 17%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -4.2% search growth over the last 90 days.
50K30KSpike '24Holiday '24Spike '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Oct, Nov, Dec · busiest ÷ quietest = 3.6×
[**Open Trend **](https://flapen.com/research/uk/toys-games/slime-kit/trend)
## **Top slime kit search terms**
- **slime making kit**203K/yr-5.3%4.0% conv. - **slime making**16K/yr+15.4%3.0% conv. - **slime making kit for girls**20K/yr-1.6%4.3% conv. - **make your own slime**10K/yr+11.1%3.5% conv. - **slime maker**12K/yr-5.1%1.7% conv. - **make your own slime kit**11K/yr-17.8%3.7% conv. - **diy slime kit**6K/yr-17.2%2.1% conv. - **slim kit**5K/yr-19.0%3.5% conv. - **fluffy slime kit**4K/yr-20.0%0.9% conv. [**All search terms **](https://flapen.com/research/uk/toys-games/slime-kit/search-terms)
## **Top slime 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%4%£6K8%£13K12%£19K16%£25K101001K10K 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**Elmers Colour Changing Slime Kit | Slime Supplies Include Colour Changing Glue & Magical Liquid Slime Activator | Activates with UV Light | Washable & Kid Friendly | 4 Count**Elmer's**£12.18**4.4★1,245 rev](https://www.amazon.co.uk/dp/B084LCKZ8L) [2**DIY Slime Kit Galaxy Slime Making Kit for Girls Gift Toy for Kids 3-12**YOPINSAND**£13.09**4.2★597 rev](https://www.amazon.co.uk/dp/B0D5LX83X3) [3**iKidiki Slime Making Kit Toys for 6 7 8 9 10 11 12 Year Old Girls Boys Gifts Birthday Galaxy Slime Kits for Girls 6-12 Year Old Girl Boy Gifts Fluffy Slime Kids Birthday Presents Craft Kits for Kids**iKidiki**£15.82**4.2★214 rev](https://www.amazon.co.uk/dp/B0D8PRL2BR) [4**Ice Cream DIY Slime Kit for Girls Butter Foam Cloud Slime with Add-ins**YOPINSAND**£13.12**4.2★605 rev](https://www.amazon.co.uk/dp/B0CL9G3BSH) [5**iKidiki Slime Making Kit for Girls Boys Toys for 6 7 8 9 10 11 12 Year Old Girls Boys Gifts Birthday Galaxy Slime Kit 6-12 Year Old Girl Boy Gifts Magic Potions Making Kit Children Fluffy Slime**iKidiki**£20.45**4.5★169 rev](https://www.amazon.co.uk/dp/B0DTTRVBZ2)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**8 Cups DIY Slime Kit Slime Kit for Girls Glow in The Dark Clear Slime**YOPINSAND**£7.44**28 rev7mo ago](https://www.amazon.co.uk/dp/B0G6D2YDC3) [**18 Pack DIY Slime Kit Slime Making Kit for Girls Premade Clear Slime**YOPINSAND**£8.72**22 rev7mo ago](https://www.amazon.co.uk/dp/B0G6CZTFKK) [**12 Cups DIY Slime Kit Slime Kit for Girls Glow in The Dark Clear Slime**YOPINSAND**£8.11**395 rev1y ago](https://www.amazon.co.uk/dp/B0F43WVJBS) [**gyoyede DIY Slime Making Kit Supplies 160 Pack Slime Kit Mix Ins Accessories Slime Add Ins Foam Glitter Charm Bulk Fishbowl Beads Containers for Making Coloring and Party Decorations**gyoyede**£13.28**17 rev1y ago](https://www.amazon.co.uk/dp/B0F1FKNZM8) [**iKidiki Slime Kit 6 7 8 9 10 11 12 Year Old Girl Gifts Galaxy Slime Making Kit Party Bag Fillers for Kids DIY Cloud & Butter Slime With a lot of Cute Decorations**iKidiki**£16.89**77 rev1y ago](https://www.amazon.co.uk/dp/B0DZX63VHH)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Slime Labs Slime Making Kit 1550ml Activator & PVA Glue Non-Toxic**Slime Labs**£14.51**4.0★**▲ 308%**](https://www.amazon.co.uk/dp/B0GY15TQN2) [**8 Cups DIY Slime Kit Slime Kit for Girls Glow in The Dark Clear Slime**YOPINSAND**£7.44**3.3★**▲ 197%**](https://www.amazon.co.uk/dp/B0G6D2YDC3) [**Elmers Colour Slime Kit Slime Supplies Include Washable Colour PVA Glue Assorted Colours & Magical Liquid Slime Activator Washable & Kid Friendly 4 Count**Elmers**£13.83**4.5★**▲ 180%**](https://www.amazon.co.uk/dp/B084LCT57T) [**18 Pack DIY Slime Kit Slime Making Kit for Girls Premade Clear Slime**YOPINSAND**£8.72**4.2★**▲ 147%**](https://www.amazon.co.uk/dp/B0G6CZTFKK) [**Elmers Colour Changing Slime Kit | Slime Supplies Include Colour Changing Glue & Magical Liquid Slime Activator | Activates with UV Light | Washable & Kid Friendly | 4 Count**Elmer's**£12.18**4.4★**▲ 145%**](https://www.amazon.co.uk/dp/B084LCKZ8L)
**~~View all trending →~~**
## **What buyers say about slime kit**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**26%
*“Good Quality”*
**Fun/Entertainment Experience**18%
*“lots of fun”*
**Gifting Purpose**10%
*“Great for a gift”*
**Value For Money**9%
*“Worth the money”*
**Developmental Needs**4%
*“Good for kids”*
**Ease Of Use**4%
*“Easy to use”*
**Adhesion/Stickiness**4%
*“it produces non-sticky slimes”*
**Advertised Vs Actual Product**3%
*“Item exactly as described”*
**Efficiency**2%
*“Amazingly successful”*
**Size-Overall**2%
*“The lids fit on the pots well”*
### **What buyers complain about **
**Adhesion/Stickiness**18%
*“Not sticky at all”*
**Value For Money**14%
*“Over priced”*
**Quality-Overall**7%
*“Very poor quality”*
**Texture/Consistency-Overall**6%
*“Awful slime, the texture was like honey for every pot”*
**Functionality-Overall**6%
*“Didn't work”*
**Advertised Vs Actual Product**6%
*“Doesnt match the description”*
**Size-Overall**5%
*“It's very small”*
**Smell**4%
*“Two scents completely empty”*
**Moist/Dry**4%
*“Clay was dry”*
**Instructions/User Manual/Troubleshooting**4%
*“instructions weren't any better”*
### **Top return reasons **
**Leak-Proof**22%
**Adhesion/Stickiness**17%
**Functionality-Overall**12%
**Advertised Vs Actual Product**7%
**Size-Overall**6%
**Defective Material/Parts**5%
**Gifting Purpose**4%
**Moist/Dry**4%
**Quality-Overall**2%
**Smell**2%
## **Common questions**
- **Is slime kit profitable to sell on Amazon United Kingdom?**
- The niche generates £158K/yr across 30 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -4.2%. Flapen's verdict: Worth a look (51/100).
- **How competitive is the slime kit niche?**
- 15 brands and 54 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 80% of demand.
- **What do buyers complain about in slime kit?**
- Top complaints mined from reviews: Adhesion/Stickiness, Value For Money, Quality-Overall. The return rate is 0.4%.
- **When does demand for slime kit peak?**
- Demand peaks in Oct–Nov–Dec; the busiest month runs 3.6× the quietest.
- **What does it cost to enter the slime kit niche?**
- Listings span £3.17–£22.36; the average listing price is £13.07 (sweet spot $15–$100). The average incumbent carries 1,319 reviews — the moat a new listing must climb.
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