yayashi sp-4 toothpaste
Skip itA small market ($36K/yr) — this niche doesn't clear our bar today.
Returns
Incredible0.3%return rate — above 5% kills the launch gate
Avg price
Great$16.44avg listing price — sweet spot $15–$100
Price range
Good$11.25–$25.33cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good6.0%search→purchase rate — share of searches ending in a sale
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Brand share
Okay82%top-5 brand share — brands hold most of the demand
Review moat
Bad6,603.8avg incumbent reviews — the moat a new listing must climb
Competition
Bad80%top-5 click share — a locked-up shelf
Growth
Bad-30.0%90-day search growth — must beat 0% to launch
Market size
Bad$36K$36K/yr · 37K searches
According to Flapen's Amazon United States niche tracking, yayashi sp-4 toothpaste is a $36K/yr Amazon United States market (37K searches/yr). The top 5 brands hold 82% of demand. Demand peaks in Jun–Jul–Aug. Verdict: Skip it — 40/100.
Data updated Jul 14, 2026 · scored weekly · How we score niches
yayashi sp-4 toothpaste market data
- Units sold / yr
- 2K–3K
- avg 100–250/product
- Revenue / yr
- $33K–$41K
- units × avg price
- Conversion rate
- 6.0%
- Avg BSR
- #590
- Page quality
- 0%
- Prime
- 80%
- Sponsored
- 70%
- Out of stock
- 16.7%
- Avg brand age
- 32 months
- Avg seller age
- 163 days
Competition & brand share
The top 5 products capture 80% of clicks — a locked-up shelf that new listings rarely crack.Brands
8 rising
Sellers
13
Top-5 brand share
82%
Top 20: 96%
Top-5 click share
80%
Top 20: 100%
Open market
12%
- SITUDAC22%
- YAYASHI21%
- MnPalettey18%
- Hymhzy14%
- MSDRWIKEY8%
- Zaucet6%
- Open — no brand owns it (2 brands, 12%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -30.0% search growth over the last 90 days.Peak months: Jun, Jul, Aug · busiest ÷ quietest = 9.2×
Top yayashi sp-4 toothpaste search terms
- probiotic whitening toothpaste32K/yr
- yayashi1K/yr
- sp4 toothpaste whitening1K/yr
- yayashi sp-4 probiotic whitening toothpaste878/yr
- sp-4 probiotics whitening toothpaste602/yr
- yayashi sp-4426/yr
- yayashi sp-4 toothpaste251/yr
- sp4 probiotic toothpaste whitening52/yr
Top yayashi sp-4 toothpaste 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 10 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Nano Hydroxyapatite Toothpastes for Enamel Protection Fluoride Free
SITUDAC$18.234.3★2,943 rev
YAYASHI SP-6 Probiotic Whitening Toothpaste Advanced Formula with 6 Probiotics for Brighter Teeth & Healthier Gums Enamel-Friendly Fresh Peppermint Long-Lasting Clean
YAYASHI$19.344.1★15 rev
Ultra SP-4 Probiotic Whitening Toothpaste (2pcs Red)
MnPalettey$15.894.3★11 rev
Sp-6 Probiotic Whitening Toothpaste Sp-6 Ultra Whitening Toothpaste with a Fluoride Free Fresh Breath and Mint Flavored Enhancement Formula Beneficial for Oral Health! 2pc (2)
Hymhzy$12.394.3★145 rev
SP-6 Probiotic Toothpaste - Niacinamide Whitening Toothpaste Enhanced Formula with 6 Probiotics for Teeth Whitening and Gum Health - Enamel-Safe Fluoride-Free Fresh Mint Flavor 4.9Oz (2)
Zaucet$14.394.4★465 rev
Newest
by launch dateYAYASHI SP-6 Probiotic Whitening Toothpaste Advanced Formula with 6 Probiotics for Brighter Teeth & Healthier Gums Enamel-Friendly Fresh Peppermint Long-Lasting Clean
YAYASHI$19.3415 rev
MSDRWIKEY 2-Pack Popping 7-Pro Whitening Toothpaste | Deep Whitening & 7 Probiotics for Oral Health | Purple Beads for Extra Freshness | Fluoride-Free
MSDRWIKEY$16.64697 rev
SP-6 Probiotic Toothpaste - Niacinamide Whitening Toothpaste Enhanced Formula with 6 Probiotics for Teeth Whitening and Gum Health - Enamel-Safe Fluoride-Free Fresh Mint Flavor 4.9Oz (2)
Zaucet$14.39465 rev
Sp-6 Probiotic Whitening Toothpaste Sp-6 Ultra Whitening Toothpaste with a Fluoride Free Fresh Breath and Mint Flavored Enhancement Formula Beneficial for Oral Health! 2pc (2)
Hymhzy$12.39145 rev
9.9% Hydroxyapatite Toothpaste - 2 Pack Protects Enamel and Strengthens Teeth Cleans and Cares for Oral Health Freshens Breath Non-Irritating Natural and Safe 8.46 Oz
--$14.601,397 rev
Trending
90-day click momentum9.9% Hydroxyapatite Toothpaste - 2 Pack Protects Enamel and Strengthens Teeth Cleans and Cares for Oral Health Freshens Breath Non-Irritating Natural and Safe 8.46 Oz
--$14.604.4★
MSDRWIKEY 2-Pack Popping 7-Pro Whitening Toothpaste | Deep Whitening & 7 Probiotics for Oral Health | Purple Beads for Extra Freshness | Fluoride-Free
MSDRWIKEY$16.644.2★
LSYXGS SP-4 Probiotics Brightening Toothpaste Paste Whitening Unflavored 3 Count (Pack of 3)
LSYXGS$25.335.0★
Sp-6 Probiotic Whitening Toothpaste Sp-6 Ultra Whitening Toothpaste with a Fluoride Free Fresh Breath and Mint Flavored Enhancement Formula Beneficial for Oral Health! 2pc (2)
Hymhzy$12.394.3★
YAYASHI SP-6 Probiotic Whitening Toothpaste Advanced Formula with 6 Probiotics for Brighter Teeth & Healthier Gums Enamel-Friendly Fresh Peppermint Long-Lasting Clean
YAYASHI$19.344.1★
What buyers say about yayashi sp-4 toothpaste
What buyers praise and complain about, mined from review topics.What buyers love
“Teeth appears a bit brighter”
“Great for Sensitive Teeth”
“as this product is truly reliable”
“Good taste”
“It didn't irritate gums”
“Cleans really well”
“Much cheaper”
“Mild flavor”
“Efficient”
“As advertised”
What buyers complain about
“Didnt work”
“The chemical, sodium lauryl sulfate may have a possible side affect of mouth sores”
“Waste of money”
“Does not whiten”
“False Advertising”
“Doesn't taste great”
“It can cause a rapid tooth decay and sensitive happen”
“they appears a little bit whiter”
“it doesnt give fresh breath”
“has gummy texture”
Top return reasons
Common questions
- Is yayashi sp-4 toothpaste profitable to sell on Amazon United States?
- The niche generates $36K/yr across 10 tracked products. 90-day search growth is -30.0%. Flapen's verdict: Skip it (40/100).
- How competitive is the yayashi sp-4 toothpaste niche?
- 8 brands and 13 sellers compete. The top 5 products take 80% of clicks and top 5 brands hold 82% of demand.
- What do buyers complain about in yayashi sp-4 toothpaste?
- Top complaints mined from reviews: Functionality-Overall, Oral Hygiene, Value For Money. The return rate is 0.3%.
- When does demand for yayashi sp-4 toothpaste peak?
- Demand peaks in Jun–Jul–Aug; the busiest month runs 9.2× the quietest.
- What does it cost to enter the yayashi sp-4 toothpaste niche?
- Listings span $11.25–$25.33; the average listing price is $16.44 (sweet spot $15–$100). The average incumbent carries 6,604 reviews — the moat a new listing must climb.