k18 hair oil
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Avg price
Incredible$32.37avg listing price — sweet spot $15–$100
Price range
Incredible$18.96–$60.75cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Great1.2%return rate — above 5% kills the launch gate
Conversion
Great7.9%search→purchase rate — share of searches ending in a sale
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Market size
Good$595K$595K/yr · 232K searches
Growth
Bad-3.0%90-day search growth — must beat 0% to launch
Review moat
Bad13,008.75avg incumbent reviews — the moat a new listing must climb
Competition
Bad93%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, k18 hair oil is a $595K/yr Amazon United States market (232K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 48/100.
Data updated Jul 14, 2026 · scored weekly · How we score niches
k18 hair oil market data
- Units sold / yr
- 15K–20K
- avg 2,000–2,500/product
- Revenue / yr
- $486K–$647K
- units × avg price
- Conversion rate
- 7.9%
- Avg BSR
- #31
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 5.5%
- Avg brand age
- 51 months
- Avg seller age
- 140 days
Competition & brand share
The top 5 products capture 93% of clicks — a locked-up shelf that new listings rarely crack.Brands
3 flat
Sellers
34
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
93%
Top 20: 100%
Open market
0%
- K1879%
- BASK & LATHER13%
- Olaplex7%
Demand & seasonality
Weekly Amazon search volume, last 96 weeks — -3.0% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.8×
Top k18 hair oil search terms
- k18 oil32K/yr
- k18 hair oil78K/yr
- k18 molecular repair hair oil20K/yr
- scalp stimulator hair growth oil50K/yr
- cecred hair oil36K/yr
- k18 serum3K/yr
- k 18 hair oil4K/yr
- hair oil k182K/yr
- jumbo scalp stimulator4K/yr
- cecreed hair oil3K/yr
Top k18 hair oil 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 8 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
K18 Molecular Repair Hair Oil - Strengthening Peptide Damaged Hair Treatment Oil - 24-Hour Frizz Control + Heat Protectant - Helps Reduce Split Ends + Boost Shine (0.34 Fl oz)
K18$25.604.3★2,876 rev
K18 Molecular Repair Hair Oil - Strengthening Peptide Damaged Hair Treatment Oil - 24-Hour Frizz Control + Heat Protectant - Helps Reduce Split Ends + Boost Shine (1 Fl oz)
K18$60.754.3★2,876 rev
Bask & Lather Scalp Stimulator Hair Growth Oil Cold Pressed Mint and Rosemary Blend with Grapeseed for Hair Growth Organic Natural Leave in All Hair Types 2 Fl Oz
BASK & LATHER$21.094.3★2,030 rev
Olaplex No. 7 Bonding Oil Concentrated High Shine Oil Heat Protectant Visibly Smooths & Softens Hair Added Color Vibrancy Up to 72 Hour Frizz Control For All Hair Types 1 fl oz
Olaplex$26.724.7★60,796 rev
Bask & Lather Scalp Stimulator Hair Growth Oil Cold Pressed Mint and Rosemary Blend with Grapeseed for Hair Growth Organic Natural Leave in All Hair Types 4 Fl Oz
BASK & LATHER$33.024.2★711 rev
Newest
by launch date
K18 Molecular Repair Minis Kit Leave-In Molecular Hair Mask + Lightweight Repair Oil Repairing Hair Duo to Strengthen + Smooth Frizz Suitable for All Hair Types Travel Size Kit
K18$44.052,876 rev
Bask & Lather Stimulating Scalp and Hair Balm for Hair Growth Mango & Shea Butter Nourishing Jojoba Oil Peppermint & Rosemary Oil Vitamin E Scalp Care Hair Care Moisture Shine & Strength 6 oz
BASK & LATHER$18.961,617 rev
K18 Molecular Repair Hair Oil - Strengthening Peptide Damaged Hair Treatment Oil - 24-Hour Frizz Control + Heat Protectant - Helps Reduce Split Ends + Boost Shine (0.34 Fl oz)
K18$25.602,876 rev
Bask & Lather Scalp Stimulator Hair Growth Oil Cold Pressed Mint and Rosemary Blend with Grapeseed for Hair Growth Organic Natural Leave in All Hair Types 2 Fl Oz
BASK & LATHER$21.092,030 rev
Bask & Lather Scalp Stimulator Hair Growth Oil Cold Pressed Mint and Rosemary Blend with Grapeseed for Hair Growth Organic Natural Leave in All Hair Types 4 Fl Oz
BASK & LATHER$33.02711 rev
Trending
90-day click momentumBask & Lather Scalp Stimulator Hair Growth Oil Cold Pressed Mint and Rosemary Blend with Grapeseed for Hair Growth Organic Natural Leave in All Hair Types 4 Fl Oz
BASK & LATHER$33.024.2★
K18 Molecular Repair Hair Oil - Strengthening Peptide Damaged Hair Treatment Oil - 24-Hour Frizz Control + Heat Protectant - Helps Reduce Split Ends + Boost Shine (1 Fl oz)
K18$60.754.3★
Olaplex No. 7 Bonding Oil Concentrated High Shine Oil Heat Protectant Visibly Smooths & Softens Hair Added Color Vibrancy Up to 72 Hour Frizz Control For All Hair Types 1 fl oz
Olaplex$26.724.7★
K18 Molecular Repair Hair Oil - Strengthening Peptide Damaged Hair Treatment Oil - 24-Hour Frizz Control + Heat Protectant - Helps Reduce Split Ends + Boost Shine (0.34 Fl oz)
K18$25.604.3★
K18 Molecular Repair Minis Kit Leave-In Molecular Hair Mask + Lightweight Repair Oil Repairing Hair Duo to Strengthen + Smooth Frizz Suitable for All Hair Types Travel Size Kit
K18$44.054.3★
What buyers say about k18 hair oil
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent Product”
“It helps hair growth”
“Nice refreshing scent”
“My hair is soft”
“Great moisturizer”
“Definitely worth the price”
“helping to style”
“As advertised”
“Its grows my hair”
“Love the shine”
What buyers complain about
“It is expensive”
“Extremely small”
“Irritation”
“This product damaged my hair”
“Unfortunately no good results”
“Hair was rough and dry”
“Very greasy”
“hate the smell”
“can break your hair”
“Im very sorry to say that this product did absolutely nothing for my hair”
Top return reasons
Common questions
- Is k18 hair oil profitable to sell on Amazon United States?
- The niche generates $595K/yr across 8 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -3.0%. Flapen's verdict: Skip it (48/100).
- How competitive is the k18 hair oil niche?
- 3 brands and 34 sellers compete. The top 5 products take 93% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in k18 hair oil?
- Top complaints mined from reviews: Value For Money, Size-Overall, Allergies. The return rate is 1.2%.
- When does demand for k18 hair oil peak?
- Demand is steady year-round — the busiest month runs 1.8× the quietest.
- What does it cost to enter the k18 hair oil niche?
- Listings span $18.96–$60.75; the average listing price is $32.37 (sweet spot $15–$100). The average incumbent carries 13,009 reviews — the moat a new listing must climb.