water brush
Worth a lookShows low returns (0.9%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Returns
Incredible0.9%return rate — above 5% kills the launch gate
Conversion
Great7.6%search→purchase rate — share of searches ending in a sale
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Competition
Good44%top-5 click share — leaders hold, buyers still browse
Brand share
Good68%top-5 brand share — brands hold most of the demand
Review moat
Good1,112.9avg incumbent reviews — the moat a new listing must climb
Price range
Good$3.50–$26.80cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Okay$237K$237K/yr · 340K searches
Growth
Okay+4.9%90-day search growth — must beat 0% to launch
Avg price
Okay$9.20avg listing price — sweet spot $15–$100
According to Flapen's Amazon United States niche tracking, water brush is a $237K/yr Amazon United States market (340K searches/yr). The top 5 brands hold 68% of demand. Verdict: Worth a look — 60/100.
Data updated Jul 10, 2026 · scored weekly · How we score niches
water brush market data
- Units sold / yr
- 25K–30K
- avg 500–750/product
- Revenue / yr
- $230K–$276K
- units × avg price
- Conversion rate
- 7.6%
- Avg BSR
- #362
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 85%
- Out of stock
- 2.7%
- Avg brand age
- 38 months
- Avg seller age
- 149 days
Competition & brand share
The top 5 products take 44% of clicks — established leaders, but buyers still shop beyond them.Brands
20 rising
Sellers
74
Top-5 brand share
68%
Top 20: 100%
Top-5 click share
44%
Top 20: 83%
Open market
26%
- Pentel23%
- KFHENSOMR16%
- JusArt12%
- Mr. Pen10%
- Prasacco7%
- UPINS6%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +4.9% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.5×
Top water brush search terms
- water pen59K/yr
- water brush pen51K/yr
- water brush47K/yr
- water pens21K/yr
- water brushes for watercolor15K/yr
- water gun pen11K/yr
- water brushes12K/yr
- pentel aquash water brush9K/yr
- water spray pen10K/yr
- pentel water brush9K/yr
Top water brush 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
JusArt Water Brush Pens 6-Pack Leak-Proof Refillable Watercolor Pens for Acrylic and Gouache Painting - Includes Pointed & Flat Tip Styles - Portable Water Brushes for Artists Beginners Adults
JusArt$8.444.6★449 rev
Pen that Sprays Water Water Spary Kids Toy Pen 2 in 1 Funny Prank Retractable Pens for Pranks and Tricks Writing and Spraying Blue & Orange 2pcs
KFHENSOMR$7.564.1★46 rev
Pentel Japan Aquash Water-Brush 3 types of set
Pentel$11.394.7★288 rev
Mr. Pen- Watercolor Brush Pens 6 pcs
Mr. Pen$5.784.4★3,075 rev
Prasacco 8-Piece Watercolour Brush Pens - Refillable Water Brush Pens for Watercolor Painting Artists Calligraphy
Prasacco$6.504.3★419 rev
Newest
by launch date
Pen that Sprays Water Water Spary Kids Toy Pen 2 in 1 Funny Prank Retractable Pens for Pranks and Tricks Writing and Spraying Blue & Orange 4pcs
FNANJWQ$9.115 rev
Pen that Sprays Water Water Spary Kids Toy Pen 2 in 1 Funny Prank Retractable Pens for Pranks and Tricks Writing and Spraying Blue 2pcs
KFHENSOMR$7.5346 rev
Pen That Sprays Water Water Spary Kids Toy Pen 2 in 1 Funny Prank Retractable Pens for Pranks and Tricks Writing and Spraying Blue Red Orange 3pcs
KFHENSOMR$8.686 rev
Pen that Sprays Water Water Spary Toy Pen 2 in 1 Funny Prank Retractable Pens for Pranks and Tricks Writing and Spraying Blue
KFHENSOMR$6.093 rev
Pen that Sprays Water Water Spary Kids Toy Pen 2 in 1 Funny Prank Retractable Pens for Pranks and Tricks Writing and Spraying Blue & Orange 2pcs
FNANJWQ$7.5110 rev
Trending
90-day click momentumPen that Sprays Water Water Spary Kids Toy Pen 2 in 1 Funny Prank Retractable Pens for Pranks and Tricks Writing and Spraying Blue 2pcs
KFHENSOMR$7.534.1★
Pen That Sprays Water Water Spary Kids Toy Pen 2 in 1 Funny Prank Retractable Pens for Pranks and Tricks Writing and Spraying Blue Red Orange 3pcs
KFHENSOMR$8.682.7★
Pen that Sprays Water Water Spary Kids Toy Pen 2 in 1 Funny Prank Retractable Pens for Pranks and Tricks Writing and Spraying Blue & Orange 2pcs
FNANJWQ$7.513.6★
Pen that Sprays Water Water Spary Kids Toy Pen 2 in 1 Funny Prank Retractable Pens for Pranks and Tricks Writing and Spraying Blue & Orange 4pcs
FNANJWQ$9.113.5★
Pen that Sprays Water Water Spary Toy Pen 2 in 1 Funny Prank Retractable Pens for Pranks and Tricks Writing and Spraying Blue
KFHENSOMR$6.095.0★
What buyers say about water brush
What buyers praise and complain about, mined from review topics.What buyers love
“Ease of use”
“the quality is solid for an entry-level artist”
“Great value”
“No leaks”
“Nice selection of sizes”
“Ease of cleaning”
“Fun toy”
“have good colors”
“Work great for on the go painting”
“I especially like how portable they are—perfect for travel”
What buyers complain about
“Impossible to open”
“Low Quality”
“it leaks”
“I thought they had colors in the pen”
“Now I know why they were cheap”
“Didn't work”
“The plastic is so cheap there are threads”
“the second wouldnt hold water”
“so probably it breaks pretty easily”
“My only heads up is that the paint can sometimes sneak back up into the water chamber”
Top return reasons
Common questions
- Is water brush profitable to sell on Amazon United States?
- The niche generates $237K/yr across 40 tracked products. 2 of 14 products launched in the last 360 days are still selling. 90-day search growth is +4.9%. Flapen's verdict: Worth a look (60/100).
- How competitive is the water brush niche?
- 20 brands and 74 sellers compete. The top 5 products take 44% of clicks and top 5 brands hold 68% of demand.
- What do buyers complain about in water brush?
- Top complaints mined from reviews: Ease Of Use, Quality-Overall, Leak-Proof. The return rate is 0.9%.
- When does demand for water brush peak?
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- What does it cost to enter the water brush niche?
- Listings span $3.50–$26.80; the average listing price is $9.20 (sweet spot $15–$100). The average incumbent carries 1,113 reviews — the moat a new listing must climb.