overnight hair mask
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.4%return rate — above 5% kills the launch gate
Conversion
Great9.1%search→purchase rate — share of searches ending in a sale
Avg price
Great£16.45avg listing price — sweet spot $15–$100
Price range
Good£3.52–£29.55cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Market size
Okay£163K£163K/yr · 110K searches
Review moat
Bad8,133.8avg incumbent reviews — the moat a new listing must climb
Growth
Bad-22.2%90-day search growth — must beat 0% to launch
Competition
Bad86%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, overnight hair mask is a £163K/yr Amazon United Kingdom market (110K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Nov–Dec. Verdict: Skip it — 39/100.
Data updated Jul 20, 2026 · scored weekly · How we score niches
overnight hair mask market data
- Units sold / yr
- 8K–10K
- avg 750–1,000/product
- Revenue / yr
- £132K–£165K
- units × avg price
- Conversion rate
- 9.1%
- Avg BSR
- #39
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 90%
- Out of stock
- 0.0%
- Avg brand age
- 65 months
- Avg seller age
- 148 days
Competition & brand share
The top 5 products capture 86% of clicks — a locked-up shelf that new listings rarely crack.Brands
3 falling
Sellers
19
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
86%
Top 20: 100%
Open market
0%
- KÉRASTASE49%
- Moroccanoil48%
- OGX3%
Demand & seasonality
Weekly Amazon search volume, last 85 weeks — -22.2% search growth over the last 90 days.Peak months: Nov, Dec · busiest ÷ quietest = 2.8×
Top overnight hair mask search terms
- moroccan oil hair mask33K/yr
- kerastase night serum22K/yr
- overnight hair mask14K/yr
- moroccan oil mask6K/yr
- overnight hair treatment7K/yr
- kerastase 8h magic night serum6K/yr
- kerastase overnight hair serum5K/yr
- kerastase night serum hair7K/yr
- moroccanoil hair mask4K/yr
- moroccan hair mask3K/yr
Top overnight hair mask 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.
All 10 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Kérastase Nutritive Nourishing Hair Serum with Niacinamide Overnight Leave-In Treatment for Dry Hair Lightweight and Non-Greasy 8H Magic Night Serum 90 ml
KÉRASTASE£29.554.6★7,865 rev
Moroccanoil Intense Hydrating Mask 250ml (Pack of 1)
Moroccanoil£23.724.6★17,189 rev
Moroccanoil Intense Hydrating Mask
Moroccanoil£8.004.6★17,189 rev
Kérastase Nutritive 8H Magic Night Hair Serum Overnight Nourishing Hair Serum For Dry Hair With Plant Proteins & Niacinamide 30 ml
KÉRASTASE£16.694.4★1,433 rev
Moroccanoil Weightless Mask
Moroccanoil£28.764.5★3,139 rev
Newest
by launch dateKérastase Nutritive 8H Magic Night Hair Serum Overnight Nourishing Hair Serum For Dry Hair With Plant Proteins & Niacinamide 30 ml
KÉRASTASE£16.691,433 rev
OGX Rescue Fusions Deep Recovery Overnight Treatment Infused with Keratin Pro-Vitamin B5 up to 3x Stronger Hair Lavender & Chamomile Scent 125ml
OGX£6.08121 rev
Moroccanoil Intense Hydrating Mask
Moroccanoil£3.5217,189 rev
Kérastase Nutritive Nourishing Hair Serum with Niacinamide Overnight Leave-In Treatment for Dry Hair Lightweight and Non-Greasy 8H Magic Night Serum 90 ml
KÉRASTASE£29.557,865 rev
Moroccanoil Weightless Mask
Moroccanoil£9.323,139 rev
Trending
90-day click momentumMoroccanoil Intense Hydrating Mask
Moroccanoil£3.524.6★
OGX Rescue Fusions Deep Recovery Overnight Treatment Infused with Keratin Pro-Vitamin B5 up to 3x Stronger Hair Lavender & Chamomile Scent 125ml
OGX£6.084.3★
Kérastase Nutritive 8H Magic Night Hair Serum Overnight Nourishing Hair Serum For Dry Hair With Plant Proteins & Niacinamide 30 ml
KÉRASTASE£16.694.4★
Moroccanoil Intense Hydrating Mask
Moroccanoil£8.004.6★
Moroccanoil Intense Hydrating Mask 250ml (Pack of 1)
Moroccanoil£23.724.6★
What buyers say about overnight hair mask
What buyers praise and complain about, mined from review topics.What buyers love
“Really good even in first ise”
“smell fresh”
“Really loving this my hair already feels in much better condition”
“Leaves hair soft and shiny”
“helps my hair stay hydrated and soft”
“frizzy worth the price”
“my hair feels great the next day”
“with a beautiful shine by the next morning”
“I have straight hair”
“Lovely night treatment for dry hair”
What buyers complain about
“Definitely not worth the price”
“Made my hair very dry straw like”
“I was really disappointed with this hair serum”
“Glad I didnt opt for the full size”
“Poor quality”
“Didnt make my dry hair feel nourished”
“Item look like it had been opened or used before”
“Ineffective”
“The smell was completely intolerable for me”
“haven't noticed any difference”
Top return reasons
Common questions
- Is overnight hair mask profitable to sell on Amazon United Kingdom?
- The niche generates £163K/yr across 10 tracked products. 90-day search growth is -22.2%. Flapen's verdict: Skip it (39/100).
- How competitive is the overnight hair mask niche?
- 3 brands and 19 sellers compete. The top 5 products take 86% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in overnight hair mask?
- Top complaints mined from reviews: Value For Money, Moist/Dry, Hair Related. The return rate is 0.4%.
- When does demand for overnight hair mask peak?
- Demand peaks in Nov–Dec; the busiest month runs 2.8× the quietest.
- What does it cost to enter the overnight hair mask niche?
- Listings span £3.52–£29.55; the average listing price is £16.45 (sweet spot $15–$100). The average incumbent carries 8,134 reviews — the moat a new listing must climb.