so slime
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.5%return rate — above 5% kills the launch gate
Review moat
Good525.54avg incumbent reviews — the moat a new listing must climb
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Competition
Good52%top-5 click share — leaders hold, buyers still browse
Conversion
Good4.2%search→purchase rate — share of searches ending in a sale
Avg price
Okay£10.25avg listing price — sweet spot $15–$100
Price range
Okay£3.47–£20.86cheapest 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
Bad100%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
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.Peak months: Oct, Nov, Dec · busiest ÷ quietest = 4.6×
Top so slime search terms
- so slime34K/yr
- diy slime3K/yr
- so slime diy4K/yr
- slime diy2K/yr
- so slime sensations4K/yr
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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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£9.994.1★77 rev
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£9.644.5★38 rev
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£7.234.7★62 rev
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£3.474.3★2,256 rev
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£6.854.5★2,019 rev
Newest
by launch dateSo 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£9.6438 rev
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£10.1826 rev
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£4.1722 rev
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£16.62179 rev
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£15.74179 rev
Trending
90-day click momentumSo 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£10.184.8★
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£16.624.6★
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£9.644.5★
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£4.174.0★
So Slime Glitzy Glitz & Glam Slime Pot - decorate your own clear slime - add in metallic foil and decorations - So Glitzy
So Slime£4.033.4★
What buyers say about so slime
What buyers praise and complain about, mined from review topics.What buyers love
“Good interactive play”
“The quality of this brands slime is better than the cheaper brands”
“lovely gift”
“holds up well once its made”
“so easy to do”
“Good for the price”
“Great slime my son loves this its his second tub he has ever got of this one”
“most of the slimes have lasted really well without drying out compared to others we have used in the past”
“nice colours”
“creative kit thats great for sensory play”
What buyers complain about
“Measured everything accurately way too sticky”
“Not worth the price”
“Picture is misleading - contents is poor”
“mixer isn't strong enough”
“Extremely disappointed as the clay is dry”
“Didn't work”
“My kids found it boring”
“not really stretchy”
“It's very small”
“Poor instructions and poor slime”
Top return reasons
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.