---
title: "Fungal Nail Pen — $4.4M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/fungal-nail-pen"
last_updated: "2026-08-12T00:24:17.510Z"
locale: en
meta:
description: "Niche score 56/100 · $4.4M/yr market · 1.7M searches/yr · $33.54 avg price. Clears our launch bar. Data updated Jul 2026."
"og:description": "Niche score 56/100 · $4.4M/yr market · 1.7M searches/yr · $33.54 avg price. Clears our launch bar. Data updated Jul 2026."
"og:title": "Fungal Nail Pen — $4.4M/yr Amazon US Niche (2026) - Flapen"
---
# **fungal nail pen**
**Launch it**
A $4.4M/yr market growing +4.7% this quarter with returns at 0.3% — clears our launch bar.
Market size 97Growth 31Conversion 78Competition 0Returns 99Price range 95Avg price 95Brand share 0Review moat 47Quality gap 78
**Returns**
**Incredible****0.3%**
return rate — above 5% kills the launch gate
**Market size**
**Incredible****$4.4M**
$4.4M/yr · 1.7M searches
**Avg price**
**Incredible****$33.54**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$19.86–$56.57**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Great****7.7%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****1,843.75**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Okay****+4.7%**
90-day search growth — must beat 0% to launch
**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 United States niche tracking, fungal nail pen is a $4.4M/yr Amazon United States market (1.7M searches/yr). The top 5 brands hold 100% of demand. Verdict: Launch it — 56/100.
Data updated Jul 18, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **fungal nail pen market data**
- **Units sold / yr**
- **125K–150K**
- avg 30,000–40,000/product
- **Revenue / yr**
- **$4.2M–$5.0M**
- units × avg price
- **Conversion rate**
- **7.7%**
- **Avg BSR**
- **#11**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **50%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **41 months**
- **Avg seller age**
- **143 days**
## **Competition & brand share**
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**3 **▲rising
**Sellers**
**4**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**100%**
Top 20: 100%
**Open market**
**0%**
- lunavia87% - Lakeim9% - OMZOK4% - Open — no brand owns it (0%)
## **Demand**
Weekly Amazon search volume, last 31 weeks — +4.7% search growth over the last 90 days.
50K30KSpike '26Dec '25Jan '26Feb '26Mar '26May '26Jun '26
[**Open Trend **](https://flapen.com/research/us/health-household/fungal-nail-pen/trend)
## **Top fungal nail pen search terms**
- **lunavia toenail fungus pen**905K/yr-5.0%6.5% conv. - **lunavia**315K/yr+38.3%5.0% conv. - **lunavia nail fungus pen**105K/yr+72.4%4.8% conv. - **nail fungus pen**46K/yr+27.5%1.9% conv. - **lunovia toenail fungus pen**32K/yr+30.8%5.7% conv. - **antifungal pen**37K/yr-26.7%2.2% conv. - **lunavia antifungal pen**29K/yr+31.9%4.3% conv. - **lunivia toenail fungus pen**33K/yr-22.1%5.7% conv. - **toe fungus pen**21K/yr+2.4%4.0% conv. - **toenail fungus pen**25K/yr-7.1%2.2% conv. [**All search terms **](https://flapen.com/research/us/health-household/fungal-nail-pen/search-terms)
## **Top fungal nail pen 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%20%$874K40%$1.7M60%$2.6M80%$3.5M1001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 4 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Lunavia Antifungal Pen Cures Most Athletes Foot Jock Itch and Ringworm - 25% Undecylenic Acid with added Tea Tree Jojoba Clove Bud Oils & Aloe - 3-Pack Twist Pen (9ML Volume)**lunavia**$36.94**4.1★5,596 rev](https://www.amazon.com/dp/B0DV12HJQX) [2**Lunavia Antifungal Pen Cures Most Athletes Foot Jock Itch and Ringworm - 25% Undecylenic Acid with added Tea Tree Jojoba Clove Bud Oils & Aloe - 6-Pack Twist Pen (18ML Volume)**lunavia**$56.57**4.2★1,100 rev](https://www.amazon.com/dp/B0DX3T2YWR) [3**Toenail Fungus Treatment Extra Strength: 25% Undecylenic Acid & Tea Tree Oil - Repairs Yellow Thick Brittle Toe and Fingernails - 3 Pens with 5 Nail Files**Lakeim**$20.78**4.5★340 rev](https://www.amazon.com/dp/B0FYY6SK9D) [4**Toenail Fungus Pen - 25% Undecylenic Acid Tea Tree Oil - Toenail Fungus Treatment Extra Strength for Toe Nail Repair Pen for Damaged Nails Foot Fungal Nail Treatment for Fungi Funginail - 5pcs**OMZOK**$19.86**4.2★339 rev](https://www.amazon.com/dp/B0FMJYB15W)
### **Newest**
by launch date
[**Toenail Fungus Treatment Extra Strength: 25% Undecylenic Acid & Tea Tree Oil - Repairs Yellow Thick Brittle Toe and Fingernails - 3 Pens with 5 Nail Files**Lakeim**$20.78**340 rev8mo ago](https://www.amazon.com/dp/B0FYY6SK9D) [**Toenail Fungus Pen - 25% Undecylenic Acid Tea Tree Oil - Toenail Fungus Treatment Extra Strength for Toe Nail Repair Pen for Damaged Nails Foot Fungal Nail Treatment for Fungi Funginail - 5pcs**OMZOK**$19.86**339 rev11mo ago](https://www.amazon.com/dp/B0FMJYB15W) [**Lunavia Antifungal Pen Cures Most Athletes Foot Jock Itch and Ringworm - 25% Undecylenic Acid with added Tea Tree Jojoba Clove Bud Oils & Aloe - 3-Pack Twist Pen (9ML Volume)**lunavia**$36.94**5,596 rev1y ago](https://www.amazon.com/dp/B0DV12HJQX) [**Lunavia Antifungal Pen Cures Most Athletes Foot Jock Itch and Ringworm - 25% Undecylenic Acid with added Tea Tree Jojoba Clove Bud Oils & Aloe - 6-Pack Twist Pen (18ML Volume)**lunavia**$56.57**1,100 rev1y ago](https://www.amazon.com/dp/B0DX3T2YWR)
### **Trending**
90-day click momentum
[**Toenail Fungus Treatment Extra Strength: 25% Undecylenic Acid & Tea Tree Oil - Repairs Yellow Thick Brittle Toe and Fingernails - 3 Pens with 5 Nail Files**Lakeim**$20.78**4.5★**▲ 70%**](https://www.amazon.com/dp/B0FYY6SK9D) [**Lunavia Antifungal Pen Cures Most Athletes Foot Jock Itch and Ringworm - 25% Undecylenic Acid with added Tea Tree Jojoba Clove Bud Oils & Aloe - 6-Pack Twist Pen (18ML Volume)**lunavia**$56.57**4.2★**▲ 22%**](https://www.amazon.com/dp/B0DX3T2YWR) [**Toenail Fungus Pen - 25% Undecylenic Acid Tea Tree Oil - Toenail Fungus Treatment Extra Strength for Toe Nail Repair Pen for Damaged Nails Foot Fungal Nail Treatment for Fungi Funginail - 5pcs**OMZOK**$19.86**4.2★**▲ 17%**](https://www.amazon.com/dp/B0FMJYB15W) [**Lunavia Antifungal Pen Cures Most Athletes Foot Jock Itch and Ringworm - 25% Undecylenic Acid with added Tea Tree Jojoba Clove Bud Oils & Aloe - 3-Pack Twist Pen (9ML Volume)**lunavia**$36.94**4.1★**— 9%**](https://www.amazon.com/dp/B0DV12HJQX)
## **What buyers say about fungal nail pen**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Efficiency**19%
*“It works great excellently”*
**Quality-Overall**17%
*“Great product and easy to use”*
**Ease Of Use**15%
*“Ease of use”*
**Value For Money**8%
*“Worth buying”*
**Advertised Vs Actual Product**6%
*“Does what it says”*
**Symptom Reduction**6%
*“The results were truly noticeable”*
**Ease Of Application**5%
*“Great applicator”*
**Instructions/User Manual/Troubleshooting**2%
*“Easy to use product with clear instructions”*
**Smell**2%
*“has a mild pleasant scent actually”*
**Functionality-Overall**2%
*“Works fast just as advertised”*
### **What buyers complain about **
**Functionality-Overall**46%
*“Works slowly”*
**Value For Money**10%
*“very expensive”*
**Symptom Reduction**8%
*“After 9 months, 3 different orders, I have no improvement”*
**Quality-Overall**3%
*“Quality control is terrible”*
**Advertised Vs Actual Product**3%
*“Didnt work as described”*
**Durability**2%
*“1 pin won't last a month for me”*
**Allergies**2%
*“allergic”*
**Ease Of Use**2%
*“Difficult to use”*
**Color**2%
*“yellow is starting to turn back normal”*
**Ethical Trade/Fair Trade**2%
*“it's a scam period”*
### **Top return reasons **
**Functionality-Overall**29%
**Advertised Vs Actual Product**16%
**Leak-Proof**16%
**Dispensing Mechanism**13%
**Defective Material/Parts**8%
**Ease Of Application**5%
**Moist/Dry**3%
**Oily/Greasy**2%
**Quality-Overall**1%
**Ingredients-Overall**1%
## **Common questions**
- **Is fungal nail pen profitable to sell on Amazon United States?**
- The niche generates $4.4M/yr across 4 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is +4.7%. Flapen's verdict: Launch it (56/100).
- **How competitive is the fungal nail pen niche?**
- 3 brands and 4 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in fungal nail pen?**
- Top complaints mined from reviews: Functionality-Overall, Value For Money, Symptom Reduction. The return rate is 0.3%.
- **What does it cost to enter the fungal nail pen niche?**
- Listings span $19.86–$56.57; the average listing price is $33.54 (sweet spot $15–$100). The average incumbent carries 1,844 reviews — the moat a new listing must climb.
## **Related niches in Health & Household**
- 76 [**cedar oil**](https://flapen.com/research/us/health-household/cedar-oil)$1.2M/yr+214.4%**Launch it**- 77 [**nutrapure glp1 cutting mix**](https://flapen.com/research/us/health-household/nutrapure-glp1-cutting-mix)$149K/yr+940.2%**Worth a look**- 77 [**dexcom g7**](https://flapen.com/research/us/health-household/dexcom-g7)$2.0M/yr+39.9%**Launch it**- 77 [**purelia**](https://flapen.com/research/us/health-household/purelia)$635K/yr+359.7%**Worth a look**- 77 [**graduation napkins**](https://flapen.com/research/us/health-household/graduation-napkins)$302K/yr+385.7%**Worth a look**- 77 [**credit card wand**](https://flapen.com/research/us/health-household/credit-card-wand)$418K/yr+101.3%**Worth a look**[**All Health & Household niches **](https://flapen.com/research/us/health-household)