---
title: "Karseell Hair Mask Collagen — £60K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/beauty/karseell-hair-mask-collagen"
last_updated: "2026-08-06T03:30:07.697Z"
locale: en
meta:
description: "Niche score 44/100 · £60K/yr market · 100K searches/yr · £6.98 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 44/100 · £60K/yr market · 100K searches/yr · £6.98 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Karseell Hair Mask Collagen — £60K/yr Amazon UK Niche (2026) - Flapen"
---
# **karseell hair mask collagen**
**Skip it**
A small market ($60K/yr) — this niche doesn't clear our bar today.
Market size 15Growth 23Conversion 82Competition 63Returns 100Price range 25Avg price 19Brand share 25Review moat 47Quality gap 38
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****8.6%**
search→purchase rate — share of searches ending in a sale
**Competition**
**Good****47%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Okay****1,764.16**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****90%**
top-5 brand share — brands hold most of the demand
**Price range**
**Okay****£1.87–£19.43**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Bad****-3.3%**
90-day search growth — must beat 0% to launch
**Avg price**
**Bad****£6.98**
avg listing price — sweet spot $15–$100
**Market size**
**Bad****£60K**
£60K/yr · 100K searches
According to Flapen's Amazon United Kingdom niche tracking, karseell hair mask collagen is a £60K/yr Amazon United Kingdom market (100K searches/yr). The top 5 brands hold 90% of demand. Demand peaks in Feb–Nov–Dec. Verdict: Skip it — 44/100.
Data updated Jul 20, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **karseell hair mask collagen market data**
- **Units sold / yr**
- **6K–8K**
- avg 250–500/product
- **Revenue / yr**
- **£42K–£56K**
- units × avg price
- **Conversion rate**
- **8.6%**
- **Avg BSR**
- **#319**
- **Page quality**
- **0%**
- **Prime**
- **94%**
- **Sponsored**
- **75%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **61 months**
- **Avg seller age**
- **156 days**
## **Competition & brand share**
The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**11 **▼falling
**Sellers**
**162**
**Top-5 brand share**
**90%**
Top 20: 100%
**Top-5 click share**
**47%**
Top 20: 85%
**Open market**
**7%**
- TRESemmé60% - Kallos17% - Tresemme Pro Collection5% - Garnier5% - Creightons3% - Dove3% - Open — no brand owns it (5 brands, 7%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -3.3% search growth over the last 90 days.
8K6KSpike '24Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Feb, Nov, Dec · busiest ÷ quietest = 2.3×
[**Open Trend **](https://flapen.com/research/uk/beauty/karseell-hair-mask-collagen/trend)
## **Top karseell hair mask collagen search terms**
- **keratin hair mask**41K/yr-20.2%4.3% conv. - **tresemme keratin smooth**17K/yr+7.5%7.6% conv. - **tresemme hair mask**12K/yr-5.0%9.0% conv. - **tresemme keratin smooth conditioner**4K/yr+64.4%8.5% conv. - **tresemme keratin**4K/yr+43.8%5.9% conv. - **kallos hair mask**6K/yr+0.8%3.5% conv. - **kallos**5K/yr-5.5%2.0% conv. - **keratin mask**4K/yr+11.3%4.8% conv. - **hair mask keratin**4K/yr-6.0%5.2% conv. - **tresemme mask**3K/yr+3.9%10.0% conv. [**All search terms **](https://flapen.com/research/uk/beauty/karseell-hair-mask-collagen/search-terms)
## **Top karseell hair mask collagen 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%5%£3K10%£6K15%£9K20%£12K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**TRESemme Keratin Smooth Deep Smoothing Mask rinse-out hair treatment with hydrolysed keratin for soft shiny frizz-free hair 440 ml**TRESemmé**£3.77**4.5★1,254 rev](https://www.amazon.co.uk/dp/B0BD8QYKFH) [2**Kallos Cosmetics KJMN Keratin Hair Mask for Dry Damaged and Chemically Treated Hair Nourishes and Helps Rebuild Natural Structure Enhances Shine and Texture with Milk Protein 1L**Kallos**£7.57**4.3★14,973 rev](https://www.amazon.co.uk/dp/B00OM9CR9M) [3**TRESemme Biotin Repair Instant Recovery Mask visibly repairs 7 types of damage in 1 use* for dry damaged hair 440 ml**TRESemmé**£3.75**4.5★622 rev](https://www.amazon.co.uk/dp/B0BQWWXW7Y) [4**Tresemme Keratin Smooth Pro Collection Shampoo and Conditioner 2 x 400ml**Tresemme Pro Collection**£8.19**4.6★1,723 rev](https://www.amazon.co.uk/dp/B07DFT1GXS) [5**Garnier Keratin Sleek Hair Mask Up to 3 Days of Sleek & Shine with 13% Keratin Smoothing Complex and Argan Oil For Frizz Prone & Dry Hair Long Lasting Sleek Look 370ml**Garnier**£4.23**4.4★38 rev](https://www.amazon.co.uk/dp/B0FQPJFZLQ)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**TRESemme Keratin Seal Smooth Conditioner salon-grade hair care for frizz-defying smoothness 300 ml**TRESemmé**£2.91**27 rev2mo ago](https://www.amazon.co.uk/dp/B0G3X79YRR) [**TRESemme Keratin Seal Smooth Shampoo salon-grade hair care for frizz-defying smoothness 400 ml**TRESemmé**£2.97**30 rev2mo ago](https://www.amazon.co.uk/dp/B0G3VYPXTP) [**TRESemme Keratin Seal Smooth Conditioner salon-grade hair care for frizz-defying smoothness 200 ml**TRESemmé**£2.81**24 rev2mo ago](https://www.amazon.co.uk/dp/B0G3X8JGGQ) [**TRESemme Keratin Seal Smooth Mask hair treatment for frizz-defying smoothness 300 ml**TRESemmé**£3.98**4 rev2mo ago](https://www.amazon.co.uk/dp/B0G3X5TF7Q) [**TRESemme Hydra Molecular Moisture Mask hair treatment for a salon-sculpted look 300 ml**TRESemmé**£4.06**2 rev2mo ago](https://www.amazon.co.uk/dp/B0G3X3ZMCD)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**TRESemme Keratin Seal Smooth Shampoo salon-grade hair care for frizz-defying smoothness 400 ml**TRESemmé**£2.97**4.6★**▲ 324%**](https://www.amazon.co.uk/dp/B0G3VYPXTP) [**TRESemme Thermo Sculpt Memory Treatment Hair Mask advanced resilience for repairing damaged hair 300 ml**TRESemmé**£3.32**4.1★**▲ 324%**](https://www.amazon.co.uk/dp/B0G3XBJ1D9) [**TRESemme Hydra Molecular Moisture Mask hair treatment for a salon-sculpted look 300 ml**TRESemmé**£4.06**5.0★**▲ 324%**](https://www.amazon.co.uk/dp/B0G3X3ZMCD) [**TRESemme Keratin Seal Smooth Conditioner salon-grade hair care for frizz-defying smoothness 200 ml**TRESemmé**£2.81**4.6★**▲ 321%**](https://www.amazon.co.uk/dp/B0G3X8JGGQ) [**TRESemme Keratin Seal Smooth Mask hair treatment for frizz-defying smoothness 300 ml**TRESemmé**£3.98**4.4★**▲ 321%**](https://www.amazon.co.uk/dp/B0G3X5TF7Q)
**~~View all trending →~~**
## **What buyers say about karseell hair mask collagen**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Soft Feel**13%
*“Feels good”*
**Smell**13%
*“Great scent”*
**Quality-Overall**12%
*“A reliable choice from a renowned brand”*
**Value For Money**11%
*“Good for the money”*
**Suitability Straight Hair**5%
*“I use it after I straighten my hair and it looks lovely and shiny too”*
**Moist/Dry**5%
*“It helps reduce dryness”*
**Suitability Curly Hair**3%
*“Helps with frizz”*
**Ease Of Use**3%
*“Easy to use”*
**Hair Growth**3%
*“Another noticeable benefit was the healthy appearance it gave my hair”*
**Lather**3%
*“It lathers up nicely”*
### **What buyers complain about **
**Smell**9%
*“My only complaint is it smells pretty strong”*
**Hair Related**6%
*“However, I noticed it wasnt very conditioning for my hair”*
**Value For Money**6%
*“Not worth the money”*
**Size-Overall**4%
*“The tub is huge”*
**Ease Of Use**3%
*“i found it very tricky to open”*
**Moist/Dry**3%
*“left my hair very dry”*
**Product Condition**3%
*“There was no foil paper on top either it was used or opened otherwise its fake”*
**Allergies**2%
*“Caused a skin reaction”*
**Dilute/Watery**2%
*“watery”*
**Leak-Proof**2%
*“The mask came damaged and broken and all the product was leaking out”*
### **Top return reasons **
**Leak-Proof**39%
**Advertised Vs Actual Product**11%
**Value For Money**9%
**Moist/Dry**7%
**Smell**7%
**Size-Overall**7%
**Thin**4%
**Quality-Overall**4%
**Product Condition**4%
**Suitability Long Hair**4%
## **Common questions**
- **Is karseell hair mask collagen profitable to sell on Amazon United Kingdom?**
- The niche generates £60K/yr across 32 tracked products. 6 of 9 products launched in the last 360 days are still selling. 90-day search growth is -3.3%. Flapen's verdict: Skip it (44/100).
- **How competitive is the karseell hair mask collagen niche?**
- 11 brands and 162 sellers compete. The top 5 products take 47% of clicks and top 5 brands hold 90% of demand.
- **What do buyers complain about in karseell hair mask collagen?**
- Top complaints mined from reviews: Smell, Hair Related, Value For Money. The return rate is 0.1%.
- **When does demand for karseell hair mask collagen peak?**
- Demand peaks in Feb–Nov–Dec; the busiest month runs 2.3× the quietest.
- **What does it cost to enter the karseell hair mask collagen niche?**
- Listings span £1.87–£19.43; the average listing price is £6.98 (sweet spot $15–$100). The average incumbent carries 1,764 reviews — the moat a new listing must climb.
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