---
title: "Mouthwash — $6K/yr Amazon SG Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/sg/health-household-and-personal-care/mouthwash"
last_updated: "2026-08-08T06:09:41.387Z"
locale: en
meta:
description: "Niche score 43/100 · $6K/yr market · 16K searches/yr · $12.09 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 43/100 · $6K/yr market · 16K searches/yr · $12.09 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Mouthwash — $6K/yr Amazon SG Niche (2026) - Flapen"
---
# **mouthwash**
**Skip it**
A small market ($6K/yr) — this niche doesn't clear our bar today.
Market size 2Growth 33Conversion 40Competition 76Returns 100Price range 52Avg price 51Brand share 13Review moat 25Quality gap 45
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Competition**
**Great****39%**
top-5 click share — an open shelf
**Price range**
**Good****$4.52–$26.18**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Good****$12.09**
avg listing price — sweet spot $15–$100
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Okay****3.2%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Okay****+6.2%**
90-day search growth — must beat 0% to launch
**Review moat**
**Bad****4,801.09**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Bad****95%**
top-5 brand share — brand-locked demand
**Market size**
**Bad****$6K**
$6K/yr · 16K searches
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=sg&signal=low_review_barrier "Top brand's reviews < 500") [** Out of Stock**](https://flapen.com/research/niches?market=sg&signal=out_of_stock "OOS rate > 10%")
According to Flapen's Amazon Singapore niche tracking, mouthwash is a $6K/yr Amazon Singapore market (16K searches/yr). The top 5 brands hold 95% of demand. Verdict: Skip it — 43/100.
Data updated Jul 24, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **mouthwash market data**
- **Units sold / yr**
- **2K–3K**
- avg 0–100/product
- **Revenue / yr**
- **$24K–$30K**
- units × avg price
- **Conversion rate**
- **3.2%**
- **Avg BSR**
- **#38**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **9%**
- **Out of stock**
- **21.6%**
- **Avg brand age**
- **86 months**
- **Avg seller age**
- **0 days**
## **Competition & brand share**
Clicks spread well past the top 5 (39% combined) — an open shelf where new products get seen.
**Brands**
**7 **▼falling
**Sellers**
**14**
**Top-5 brand share**
**95%**
Top 20: 100%
**Top-5 click share**
**39%**
Top 20: 94%
**Open market**
**2%**
- Listerine47% - TheraBreath16% - Pearlie White13% - ノニオ11% - Colgate8% - Crest3% - Open — no brand owns it (1 brand, 2%)
## **Demand**
Weekly Amazon search volume, last 29 weeks — +6.2% search growth over the last 90 days.
500300Spike '26Jan '26Feb '26Mar '26Mar '26Apr '26May '26Jun '26
[**Open Trend **](https://flapen.com/research/sg/health-household-and-personal-care/mouthwash/trend)
## **Top mouthwash 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%3%$1906%$3799%$56912%$7591101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 23 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Listerine Mouthwash Total Care Zero 1000ml**Listerine**$9.65**4.4★15 rev](https://www.amazon.sg/dp/B06Y1HDGJT) [2**Pearlie White Fluorinze Alcohol Free Mouth Rinse Twin Pack 750ml**Pearlie White**$9.52**4.7★35 rev](https://www.amazon.sg/dp/B071DZL3TJ) [3**TheraBreath Fresh Breath Dentist Formulated Oral Rinse Mild Mint 16 Ounce (Pack of 2)**TheraBreath**$25.37**4.6★45,882 rev](https://www.amazon.sg/dp/B001ET76AI) [4**Listerine Mouthwash Cool Mint Zero (0% Alcohol) 1000ml (1L)**Listerine**$8.72**4.4★26 rev](https://www.amazon.sg/dp/B06Y1NXKKZ) [5**NONIO (Quasi-drug) Mouthwash Light Herb Mint Non-Alcoholic Type Mouth Wash Liquid Kills Bacteria Bacteria Bacteria 33.8 fl oz (1 000 ml) x 2 Packs + Mini Rinse 2.8 fl oz (80 ml) x 2 Packs**ノニオ**$19.58**4.3★204 rev](https://www.amazon.sg/dp/B08DVF2RZH)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**TheraBreath Fresh Breath Oral Rinse Invigorating Icy Mint 473ml**TheraBreath**$15.25**0 rev1y ago](https://www.amazon.sg/dp/B0DV5DRBXD) [**Crest Pro-Health Advanced Mouthwash Alcohol Free Multi-Protection Fresh Mint 1 L (33.8 fl oz) Pack of 2**Crest**$22.38**12,107 rev3y ago](https://www.amazon.sg/dp/B0C881GLNM) [**NONIO (Quasi-drug) Mouthwash Light Herb Mint Non-Alcoholic Type Mouth Wash Liquid Kills Bacteria Bacteria Bacteria 33.8 fl oz (1 000 ml) x 2 Packs + Mini Rinse 2.8 fl oz (80 ml) x 2 Packs**ノニオ**$19.58**204 rev4y ago](https://www.amazon.sg/dp/B08DVF2RZH) [**Listerine Cool Mint Zero Antiseptic Mouthwash 1L (Pack of 3)**Listerine**$17.37**26 rev4y ago](https://www.amazon.sg/dp/B09ZYW4XFW) [**Listerine Total Care Antiseptic Mouthwash 1L (Pack of 3)**Listerine**$20.38**10 rev4y ago](https://www.amazon.sg/dp/B09ZYRF6S2)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**NONIO (Quasi-drug) Mouthwash Light Herb Mint Non-Alcoholic Type Mouth Wash Liquid Kills Bacteria Bacteria Bacteria 33.8 fl oz (1 000 ml) x 2 Packs + Mini Rinse 2.8 fl oz (80 ml) x 2 Packs**ノニオ**$19.58**4.3★**▲ 92%**](https://www.amazon.sg/dp/B08DVF2RZH) [**Crest Pro-Health Advanced Mouthwash Alcohol Free Multi-Protection Fresh Mint 1 L (33.8 fl oz) Pack of 2**Crest**$22.38**4.7★**▲ 73%**](https://www.amazon.sg/dp/B0C881GLNM) [**Listerine Mouthwash Cool Mint 1000ml**Listerine**$7.99**4.9★**▲ 73%**](https://www.amazon.sg/dp/B06Y1Q683Z) [**TheraBreath Fresh Breath Dentist Formulated 24-Hour Oral Rinse Icy Mint 16 Ounce (Pack of 2)**TheraBreath**$26.18**4.8★**▲ 70%**](https://www.amazon.sg/dp/B00IRKRK9O) [**NONIO Mouthwash - Clear Herb Mint 600 milliliters**ノニオ**$5.88**4.1★**▲ 68%**](https://www.amazon.sg/dp/B073XNLYTG)
**~~View all trending →~~**
## **What buyers say about mouthwash**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Oral Hygiene**100%
*“Great mouthwash”*
### **Top return reasons **
**Ethical Trade/Fair Trade**100%
## **Common questions**
- **Is mouthwash profitable to sell on Amazon Singapore?**
- The niche generates $6K/yr across 23 tracked products. 90-day search growth is +6.2%. Flapen's verdict: Skip it (43/100).
- **How competitive is the mouthwash niche?**
- 7 brands and 14 sellers compete. The top 5 products take 39% of clicks and top 5 brands hold 95% of demand.
- **What does it cost to enter the mouthwash niche?**
- Listings span $4.52–$26.18; the average listing price is $12.09 (sweet spot $15–$100). The average incumbent carries 4,801 reviews — the moat a new listing must climb.
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