---
title: "Cosline Kajal Eyeliner — €38K/yr Amazon DE Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/de/kosmetik/cosline-kajal-eyeliner"
last_updated: "2026-08-09T19:50:59.197Z"
locale: en
meta:
description: "Niche score 34/100 · €38K/yr market · 155K searches/yr · €13.79 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 34/100 · €38K/yr market · 155K searches/yr · €13.79 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Cosline Kajal Eyeliner — €38K/yr Amazon DE Niche (2026) - Flapen"
---
# **cosline kajal eyeliner**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 9Growth 22Conversion 22Competition 14Returns 100Price range 22Avg price 65Brand share 0Review moat 53Quality gap 76
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Good****€13.79**
avg listing price — sweet spot $15–$100
**Review moat**
**Good****1,399.9**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-5.2%**
90-day search growth — must beat 0% to launch
**Conversion**
**Bad****1.8%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Bad****€4.73–€17.88**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Bad****84%**
top-5 click share — a locked-up shelf
**Market size**
**Bad****€38K**
€38K/yr · 155K searches
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon Germany niche tracking, cosline kajal eyeliner is a €38K/yr Amazon Germany market (155K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Feb–Mar. Verdict: Skip it — 34/100.
Data updated Jul 14, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **cosline kajal eyeliner market data**
- **Units sold / yr**
- **5K–6K**
- avg 250–500/product
- **Revenue / yr**
- **€69K–€83K**
- units × avg price
- **Conversion rate**
- **1.8%**
- **Avg BSR**
- **#5**
- **Page quality**
- **0%**
- **Prime**
- **30%**
- **Sponsored**
- **100%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **60 months**
- **Avg seller age**
- **170 days**
## **Competition & brand share**
The top 5 products capture 84% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **▼falling
**Sellers**
**28**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**84%**
Top 20: 100%
**Open market**
**0%**
- COSLINE85% - M. Asam6% - Cosline Cosmetics4% - Sandstone Scandinavia3% - Artdeco3%
## **Demand & seasonality**
Weekly Amazon search volume, last 72 weeks — -5.2% search growth over the last 90 days.
9K7KPrime Day '25Spike '25Spike '26 seasonMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Feb, Mar · busiest ÷ quietest = 2.6×
[**Open Trend **](https://flapen.com/research/de/kosmetik/cosline-kajal-eyeliner/trend)
## **Top cosline kajal eyeliner search terms**
- **cosline kajal eyeliner**94K/yr+17.5%1.9% conv. - **cosline kajal**20K/yr+112.8%1.1% conv. - **kajal aubergine**18K/yr-71.5%3.0% conv. - **cosline kajal eyeliner aubergine**9K/yr-57.5%4.1% conv. - **eyeliner aubergine**10K/yr-70.7%2.1% conv. - **cosline eyeliner**4K/yr+21.6%1.1% conv. [**All search terms **](https://flapen.com/research/de/kosmetik/cosline-kajal-eyeliner/search-terms)
## **Top cosline kajal eyeliner 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%€6K30%€11K45%€17K60%€23K1001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 10 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**COSLINE Kajal Eyeliner Aubergine 129 Wasserfester Kajal Dunkler neutraler Lidstrich Nicht so hart wie Schwarz Weiches Auftragen Starke Pigmentierung Vegan Made in Germany**COSLINE**€15.89**4.2★1,373 rev](https://www.amazon.de/dp/B07VRLQ8TS) [2**COSLINE Kajal Eyeliner Schwarz 101 Wasserfester Kajal Verschmiert nicht Schwarzer Augenstift & Lidstrich Weiches Auftragen Starke Pigmentierung Vegan Made in Germany**COSLINE**€15.89**4.2★1,373 rev](https://www.amazon.de/dp/B07VPNL4D2) [3**COSLINE Kajal Eyeliner Ocean 115 Blau Wasserfester Kajal Verschmiert nicht Blaugrauer Lidstrich Weiches Auftragen Starke Pigmentierung Vegan Made in Germany**COSLINE**€15.89**4.2★1,373 rev](https://www.amazon.de/dp/B08DJ2CPBZ) [4**M. Asam MAGIC FINISH EYE DESIGNER Gleaming-Aubergine (0 28 g) wasserfester Eyeliner für langanhaltendes & farbintensives Ergebnis mit integriertem Schwämmchen für einfaches Verblenden Augen Make-up**M. Asam**€7.10**4.5★595 rev](https://www.amazon.de/dp/B0CJGNX1TF) [5**COSLINE Kajal Eyeliner Grau 107 Wasserfester Kajal Verschmiert nicht Anthrazitfarbener Lidstrich Weiches Auftragen Starke Pigmentierung Vegan Made in Germany**COSLINE**€15.89**4.2★1,373 rev](https://www.amazon.de/dp/B08DJ1PQHH)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Sandstone Scandinavia Hypoallergener Eyeliner Wasserfester Kajalstift für empfindliche Augen Parfümfrei vegan und langanhaltend Aubergine**Sandstone Scandinavia**€10.85**2,309 rev3mo ago](https://www.amazon.de/dp/B0GWM5QRTV) [**COSLINE Eyeshadow Taupe 311 Lidschattenstift Langanhaltende Formel Stick mit cremiger Textur Wischfest Made in Germany**COSLINE**€17.88**332 rev7mo ago](https://www.amazon.de/dp/B0G3966RZF) [**M. Asam MAGIC FINISH EYE DESIGNER Gleaming-Aubergine (0 28 g) wasserfester Eyeliner für langanhaltendes & farbintensives Ergebnis mit integriertem Schwämmchen für einfaches Verblenden Augen Make-up**M. Asam**€7.10**595 rev2y ago](https://www.amazon.de/dp/B0CJGNX1TF) [**COSLINE Eyeshadow Champagner 305 Lidschattenstift Langanhaltende Formel Wischfest Stick mit cremiger Textur Glitzer Gold Hell Made in Germany**Cosline Cosmetics**€17.88**332 rev5y ago](https://www.amazon.de/dp/B091FZRY2V) [**COSLINE Kajal Eyeliner Grau 107 Wasserfester Kajal Verschmiert nicht Anthrazitfarbener Lidstrich Weiches Auftragen Starke Pigmentierung Vegan Made in Germany**COSLINE**€15.89**1,373 rev5y ago](https://www.amazon.de/dp/B08DJ1PQHH)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Sandstone Scandinavia Hypoallergener Eyeliner Wasserfester Kajalstift für empfindliche Augen Parfümfrei vegan und langanhaltend Aubergine**Sandstone Scandinavia**€10.85**4.2★**▲ 159%**](https://www.amazon.de/dp/B0GWM5QRTV) [**COSLINE Kajal Eyeliner Braun 102 Wasserfester Kajal Verschmiert nicht Dunkelbrauner Lidstrich Weiches Auftragen Starke Pigmentierung Vegan Made in Germany**COSLINE**€15.89**4.2★**▲ 112%**](https://www.amazon.de/dp/B07VRLQ73J) [**COSLINE Kajal Eyeliner Schwarz 101 Wasserfester Kajal Verschmiert nicht Schwarzer Augenstift & Lidstrich Weiches Auftragen Starke Pigmentierung Vegan Made in Germany**COSLINE**€15.89**4.2★**▲ 52%**](https://www.amazon.de/dp/B07VPNL4D2) [**COSLINE Eyeshadow Taupe 311 Lidschattenstift Langanhaltende Formel Stick mit cremiger Textur Wischfest Made in Germany**COSLINE**€17.88**4.4★**▲ 44%**](https://www.amazon.de/dp/B0G3966RZF) [**ARTDECO Soft Eyeliner Waterproof - Cremiger Kajalstift wasserfest langanhaltender Eye Liner mit hoher Deckkraft - 1 x 1 2 g**Artdeco**€4.73**4.4★**▲ 30%**](https://www.amazon.de/dp/B003HL9SVG)
**~~View all trending →~~**
## **What buyers say about cosline kajal eyeliner**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Farbe**19%
*“Der Eyeliner ist sehr pigmentiert”*
**Einfache Anwendung**12%
*“Leicht aufzutragen”*
**Haltbarkeit**10%
*“Und hält”*
**beworben Vs Tatsächliches Produkt**8%
*“Es hält, was es verspricht”*
**Wasserbeständigkeit**7%
*“Der Eyeliner ist wie beschrieben (wasserfest, wischfest)”*
**Weiches Gefühl**6%
*“Und soft und leicht aufzutragen”*
**Lidstrichqualität**5%
*“Super Eyeliner”*
**Qualität insgesamt**5%
*“Top Qualität”*
**Wischfestigkeit**4%
*“Ich habe tatsächlich keine verschmierten Augen mehr :-”*
**Preis-Leistungs-Verhältnis**4%
*“Und das für dieses Geld”*
### **What buyers complain about **
**Haltbarkeit**13%
*“Hält nicht”*
**Wischfestigkeit**10%
*“Allerdings verschmiert er genauso wie günstigere Stifte”*
**Preis-Leistungs-Verhältnis**10%
*“Darum ist der Stift zu teuer”*
**Allergien**9%
*“Habe entzündete Augen davon bekommen”*
**Lidstrichqualität**7%
*“leider verwischt er genauso schnell wie die billigen Eyeliner, enttäuschend!”*
**Empfindlichkeit insgesamt**3%
*“Nicht für empfindliche Auge”*
**Wasserbeständigkeit**3%
*“Naja, nicht so ganz waterproof”*
**Gesamtgröße**3%
*“deshalb zu breit.”*
**Qualität insgesamt**3%
*“Ware mangelhaft”*
**Dicke**3%
*“zu dick zum auftragen.”*
### **Top return reasons **
**Farbe**43%
**beworben Vs Tatsächliches Produkt**8%
**Funktionalität insgesamt**6%
**Lackqualität**6%
**Gesamtgröße**6%
**Defekt Material/Teile**6%
**Haltbarkeit**6%
**Wischfestigkeit**4%
**Eignung für trockene Haut**3%
**Auslaufsicher**3%
## **Common questions**
- **Is cosline kajal eyeliner profitable to sell on Amazon Germany?**
- The niche generates €38K/yr across 10 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -5.2%. Flapen's verdict: Skip it (34/100).
- **How competitive is the cosline kajal eyeliner niche?**
- 5 brands and 28 sellers compete. The top 5 products take 84% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in cosline kajal eyeliner?**
- Top complaints mined from reviews: Haltbarkeit, Wischfestigkeit, Preis-Leistungs-Verhältnis. The return rate is 0.1%.
- **When does demand for cosline kajal eyeliner peak?**
- Demand peaks in Feb–Mar; the busiest month runs 2.6× the quietest.
- **What does it cost to enter the cosline kajal eyeliner niche?**
- Listings span €4.73–€17.88; the average listing price is €13.79 (sweet spot $15–$100). The average incumbent carries 1,400 reviews — the moat a new listing must climb.
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