---
title: "Methylene Blue — $5K/yr Amazon SG Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/sg/industrial-and-scientific/methylene-blue"
last_updated: "2026-08-06T00:22:46.508Z"
locale: en
meta:
description: "Niche score 37/100 · $5K/yr market · 3K searches/yr · $44.31 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 37/100 · $5K/yr market · 3K searches/yr · $44.31 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Methylene Blue — $5K/yr Amazon SG Niche (2026) - Flapen"
---
# **methylene blue**
**Skip it**
A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Market size 1Growth 13Conversion 53Competition 0Returns 100Price range 95Avg price 95Brand share 0Review moat 84Quality gap 63
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$44.31**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$31.77–$55.93**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Great****310.33**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Good****4.3%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Bad****-24.9%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$5K**
$5K/yr · 3K searches
**Competition**
**Bad****100%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon Singapore niche tracking, methylene blue is a $5K/yr Amazon Singapore market (3K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 37/100.
Data updated Jul 24, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **methylene blue market data**
- **Units sold / yr**
- **100–250**
- avg 0–100/product
- **Revenue / yr**
- **$4K–$11K**
- units × avg price
- **Conversion rate**
- **4.3%**
- **Avg BSR**
- **#163**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **0%**
- **Out of stock**
- **48.9%**
- **Avg brand age**
- **31 months**
- **Avg seller age**
- **0 days**
## **Competition & brand share**
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**2 **▼falling
**Sellers**
**13**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**100%**
Top 20: 100%
**Open market**
**0%**
- PureGood84% - HelloPharmacist16%
## **Demand**
Weekly Amazon search volume, last 44 weeks — -24.9% search growth over the last 90 days.
8060Spike '25Black Friday '25Spike '26Sep '25Oct '25Dec '25Feb '26Mar '26May '26
[**Open Trend **](https://flapen.com/research/sg/industrial-and-scientific/methylene-blue/trend)
## **Top methylene blue 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%15%$72530%$1K45%$2K60%$3K101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 3 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**3 Pack Methylene Blue 1% Solution (60 mL) Pharmaceutical Grade USP-Grade Third-Party Tested Formaldehyde and Alcohol Free Amber Dropper Bottles**PureGood**$55.93**4.6★27 rev](https://www.amazon.sg/dp/B0F6Q1JQNK) [2**Pharmaceutical Grade Methylene Blue 1% (60 mL) USP-Grade Third-Party Tested Alcohol & Formaldehyde Free in Amber Dropper Bottle**PureGood**$45.23**4.2★742 rev](https://www.amazon.sg/dp/B0D7DZ4D39) [3**HelloPharmacist NeuroBoost Methylene Blue 1% - 2Oz (60 mL) - Pharmaceutical USP Grade 99.99% Purity - Lab Certified - Made In The USA - 1mL Graduated Dropper (10mg/1mL) - Trusted HelloPharmacist Brand**HelloPharmacist**$31.77**4.3★162 rev](https://www.amazon.sg/dp/B0DKLP5S67)
### **Newest**
by launch date
[**3 Pack Methylene Blue 1% Solution (60 mL) Pharmaceutical Grade USP-Grade Third-Party Tested Formaldehyde and Alcohol Free Amber Dropper Bottles**PureGood**$55.93**27 rev1y ago](https://www.amazon.sg/dp/B0F6Q1JQNK) [**HelloPharmacist NeuroBoost Methylene Blue 1% - 2Oz (60 mL) - Pharmaceutical USP Grade 99.99% Purity - Lab Certified - Made In The USA - 1mL Graduated Dropper (10mg/1mL) - Trusted HelloPharmacist Brand**HelloPharmacist**$31.77**162 rev1y ago](https://www.amazon.sg/dp/B0DKLP5S67) [**Pharmaceutical Grade Methylene Blue 1% (60 mL) USP-Grade Third-Party Tested Alcohol & Formaldehyde Free in Amber Dropper Bottle**PureGood**$45.23**742 rev2y ago](https://www.amazon.sg/dp/B0D7DZ4D39)
### **Trending**
90-day click momentum
[**HelloPharmacist NeuroBoost Methylene Blue 1% - 2Oz (60 mL) - Pharmaceutical USP Grade 99.99% Purity - Lab Certified - Made In The USA - 1mL Graduated Dropper (10mg/1mL) - Trusted HelloPharmacist Brand**HelloPharmacist**$31.77**4.3★**▲ 18%**](https://www.amazon.sg/dp/B0DKLP5S67) [**Pharmaceutical Grade Methylene Blue 1% (60 mL) USP-Grade Third-Party Tested Alcohol & Formaldehyde Free in Amber Dropper Bottle**PureGood**$45.23**4.2★**▲ 11%**](https://www.amazon.sg/dp/B0D7DZ4D39) [**3 Pack Methylene Blue 1% Solution (60 mL) Pharmaceutical Grade USP-Grade Third-Party Tested Formaldehyde and Alcohol Free Amber Dropper Bottles**PureGood**$55.93**4.6★**— 8%**](https://www.amazon.sg/dp/B0F6Q1JQNK)
## **Common questions**
- **Is methylene blue profitable to sell on Amazon Singapore?**
- The niche generates $5K/yr across 3 tracked products. 90-day search growth is -24.9%. Flapen's verdict: Skip it (37/100).
- **How competitive is the methylene blue niche?**
- 2 brands and 13 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- **What does it cost to enter the methylene blue niche?**
- Listings span $31.77–$55.93; the average listing price is $44.31 (sweet spot $15–$100). The average incumbent carries 310 reviews — the moat a new listing must climb.