k18
Skip itBrand-locked demand (top 5 brands take 98% of clicks) — this niche doesn't clear our bar today.
Returns
Great1.1%return rate — above 5% kills the launch gate
Competition
Great30%top-5 click share — an open shelf
Avg price
Good$131.16avg listing price — sweet spot $15–$100
Market size
Good$514K$514K/yr · 335K searches
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Review moat
Bad6,514.11avg incumbent reviews — the moat a new listing must climb
Growth
Bad-15.2%90-day search growth — must beat 0% to launch
Conversion
Bad1.2%search→purchase rate — share of searches ending in a sale
Price range
Bad$26.36–$640.40cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Bad98%top-5 brand share — brand-locked demand
According to Flapen's Amazon Saudi Arabia niche tracking, k18 is a $514K/yr Amazon Saudi Arabia market (335K searches/yr). The top 5 brands hold 98% of demand. Verdict: Skip it — 45/100.
Data updated Jul 24, 2026 · scored weekly · How we score niches
k18 market data
- Units sold / yr
- 5K–6K
- avg 100–250/product
- Revenue / yr
- $656K–$787K
- units × avg price
- Conversion rate
- 1.2%
- Avg BSR
- #132
- Page quality
- 0%
- Prime
- 92%
- Sponsored
- 40%
- Out of stock
- 15.9%
- Avg brand age
- 59 months
- Avg seller age
- 62 days
Competition & brand share
Clicks spread well past the top 5 (30% combined) — an open shelf where new products get seen.Brands
8 rising
Sellers
51
Top-5 brand share
98%
Top 20: 100%
Top-5 click share
30%
Top 20: 72%
Open market
1%
- L'Oréal Professionnel Paris44%
- OLAPLEX30%
- K1818%
- Azonee6%
- Fino1%
- Karseell1%
- Open — no brand owns it (2 brands, 1%)
Top k18 search terms
- k18121K/yr
- لوريال بروفيشنال41K/yr
- olaplex47K/yr
- loreal professional22K/yr
- k18 للشعر26K/yr
- k18 leave-in molecular repair hair mask12K/yr
- اولابلكس15K/yr
- loreal professional shampoo9K/yr
- loreal absolut repair11K/yr
- absolute repair loreal8K/yr
Top k18 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Olaplex No.7 20140640 Bonding Oil 30 ml
OLAPLEX$79.574.5★15,703 rev
K18 Mini Leave-In Molecular Hair Mask Repairs Dry or Damaged Hair Reverse Hair Damage from Bleach Color Chemical Services & Heat 15ml
K18$105.404.2★25,419 rev
Azonee Leave-In Repair Hair Mask Molecular Hair Mask Repairs Dry or Damaged Hair Silky Smooth Hair Care Reverse Hair Damage from Bleach Color Chemical Services & Heat Suitable for All Hair Types
Azonee$89.163.8★5 rev
LOréal Professionnel | Absolut Repair Molecular Leave-In-Mask Repair Damage & Restore Strength Heat Protectant For Hair For All Damaged Hair Types SERIE EXPERT 100ml
L'Oréal Professionnel Paris$100.004.2★390 rev
LOréal Professionnel Absolut Repair Molecular Hair Mask Hair Mask for Dry and Frizzy Hair Deep Repair Mask for Damaged Hair Peptide Bonder Plus Amino Acids SERIE EXPERT 250ml
L'Oréal Professionnel Paris$129.714.1★519 rev
Newest
by launch date
K18 AstroLift Reparative Volume Spray Thickening and Volumising Spray 2-Day Hold Non-Sticky Humidity Resistant 118ml
K18$174.32510 rev
OLAPLEX No.5 LEAVE-IN Moisturize and Mend Leave-In Conditioner 100ml
OLAPLEX$81.912,341 rev
Azonee Leave-In Repair Hair Mask Molecular Hair Mask Repairs Dry or Damaged Hair Silky Smooth Hair Care Reverse Hair Damage from Bleach Color Chemical Services & Heat Suitable for All Hair Types
Azonee$89.165 rev
LOréal Professionnel | Absolut Repair shampoo refill | With Protein and Omega-9 for dry and damaged hair | SERIE EXPERT | 500ml
L'Oréal Professionnel Paris$118.32752 rev
LOréal Professionnel Absolut Repair Molecular Hair Mask Hair Mask for Dry and Frizzy Hair Deep Repair Mask for Damaged Hair Peptide Bonder Plus Amino Acids SERIE EXPERT 250ml
L'Oréal Professionnel Paris$129.71519 rev
Trending
90-day click momentum
OLAPLEX Hair Perfector No.3 100 ml
OLAPLEX$107.204.4★
LOréal Professionnel Absolut Repair Hair Mask Hair Mask for Dry and Frizzy Hair Deep Repair Mask for Damaged Hair With Omega 9 & Protein SERIE EXPERT 250ml
L'Oréal Professionnel Paris$138.854.6★
LOréal Professionnel | Absolut Repair shampoo refill | With Protein and Omega-9 for dry and damaged hair | SERIE EXPERT | 500ml
L'Oréal Professionnel Paris$118.324.8★
Azonee Leave-In Repair Hair Mask Molecular Hair Mask Repairs Dry or Damaged Hair Silky Smooth Hair Care Reverse Hair Damage from Bleach Color Chemical Services & Heat Suitable for All Hair Types
Azonee$89.163.8★
Olaplex No.4 And 5 Bond Maintenance Shampoo And Conditioner 250 Ml (Pack Of 2)
OLAPLEX$185.124.4★
What buyers say about k18
What buyers praise and complain about, mined from review topics.What buyers love
“Best hair perfector”
“soft”
“Good serum, the smell of it is amazing I like the texture of the serum it doesnt make your hair greasy, the only downside is high price for a small size bottle”
“Good quality”
“Great hair mask for damaged colored hairs”
“my hair is growing well”
“Good serum, the smell of it is amazing I like the texture of the serum it doesnt make your hair greasy, the only downside is high price for a small size bottle”
What buyers complain about
“waste of money”
“didnt like the smell”
“Normal no result”
“Normal no result”
“Horrible product, damages your hair DONT BUY; waste of money”
Top return reasons
Common questions
- Is k18 profitable to sell on Amazon Saudi Arabia?
- The niche generates $514K/yr across 53 tracked products. 7 of 7 products launched in the last 360 days are still selling. 90-day search growth is -15.2%. Flapen's verdict: Skip it (45/100).
- How competitive is the k18 niche?
- 8 brands and 51 sellers compete. The top 5 products take 30% of clicks and top 5 brands hold 98% of demand.
- What do buyers complain about in k18?
- Top complaints mined from reviews: القيمة مقابل المال, يشم, الوظيفة - بشكل عام. The return rate is 1.1%.
- What does it cost to enter the k18 niche?
- Listings span $26.36–$640.40; the average listing price is $131.16 (sweet spot $15–$100). The average incumbent carries 6,514 reviews — the moat a new listing must climb.