Best Selling K18 Hair Treatment: See Top Product Rankings by Sales Volume & Market Trends

August 2026
127 Products Tracked

Looking for the most popular k18 hair treatment products in the market? Our report leverages real Amazon monthly sales data to identify the best-performing products and the fastest-growing opportunities within the search results for the keyword "k18 hair treatment." Whether you're searching for winning products to launch or monitoring market trends and competitor performance, this report provides the insights you need.

Based on monthly sales analytics, our Shoppers' Top Picks highlights that ASIN B09HR5KSR8 currently leads the k18 hair treatment market with 50K monthly sales, followed closely by B01I2ZQJSG with 30K monthly sales and B07VR1NDSQ with 20K monthly sales. By tracking competitor sales performance and shifts in market demand, sellers can uncover emerging opportunities and make more informed product and marketing decisions.

🏆Shoppers' Top PicksAmazon
by monthly sales August 2026
K18 Leave-In Molecular Repair Hair Mask, Patented, Lasting Repair For Dry, Frizzy, Damaged Hair, Reverse Damage In 4 Minutes From Bleach, Color, Chemical Services + Heat
1
B09HR5KSR8
$29.00·
4.3
Units/sold50K
Elizavecca cer-100 collagen coating hair protein treatment 100ml
2
B01I2ZQJSG
$6.99·
4.4
Units/sold30K
OLAPLEX N°.7 Bonding Hair Oil, High Shine | Heat Protection Up to 450°F/232°C, Use on Wet or Dry Hair, Vitamin E and Sunflower Seed Oil
3
B07VR1NDSQ
$32.00·
4.7
Units/sold20K
🚀Fastest Growing
by MoM sales growth
K18 Leave-In Molecular Repair Hair Mask, Patented, Lasting Repair For Dry, Frizzy, Damaged Hair, Reverse Damage In 4 Minutes From Bleach, Color, Chemical Services + Heat
#1
B09HR5KSR8
$29.00·
4.3
K18 Leave-In Molecular Repair Hair Mask, Patented, Lasting Repair For Dry, Frizzy, Damaged Hair, Reverse Damage In 4 Minutes From Bleach, Color, Chemical Services + Heat
Units/sold
50K25.0%
Elizavecca cer-100 collagen coating hair protein treatment 100ml
#2
B01I2ZQJSG
$6.99·
4.4
Elizavecca cer-100 collagen coating hair protein treatment 100ml
Units/sold
30K2.0%

Top Selling K18 Hair Treatment

As of August 2026, we analyzed 127 tracked products in Amazon's "k18 hair treatment" search results and generated the following sales chart and product rankings based on monthly sales data. The ranking below highlights the Top 10 products by estimated monthly sales. According to the latest data, these products generated between 10,000 and 50,000 monthly sales. B09HR5KSR8 leads the k18 hair treatment market with an estimated 50,000 monthly sales, up 25.0% from the previous month.

127Products Tracked
17,000Top 10 Avg. Sales
$36.40Top 10 Avg. Price
4.5Top 10 Avg. Rating
🏆
K18 Leave-In Molecular Repair Hair Mask, Patented, Lasting Repair For Dry, Frizzy, Damaged Hair, Reverse Damage In 4 Minutes From Bleach, Color, Chemical Services + Heat
#1
B09HR5KSR8

K18 Leave-In Molecular Repair Hair Mask, Patented, Lasting Repair For Dry, Frizzy, Damaged Hair, Reverse Damage In 4 Minutes From Bleach, Color, Chemical Services + Heat

50,000
▲ 25.0%
Units Sold/mo
$29.00
Price
4.3
Rating
31.4K
Reviews
2
Elizavecca cer-100 collagen coating hair protein treatment 100ml
B01I2ZQJSG
$6.99
4.4 (64.4K)
Elizavecca cer-100 collagen coating hair protein treatment 100ml
30,000 Units Sold/mo▲ 2.0%
3
OLAPLEX N°.7 Bonding Hair Oil, High Shine | Heat Protection Up to 450°F/232°C, Use on Wet or Dry Hair, Vitamin E and Sunflower Seed Oil
B07VR1NDSQ
$32.00
4.7 (61.3K)
OLAPLEX N°.7 Bonding Hair Oil, High Shine | Heat Protection Up to 450°F/232°C, Use on Wet or Dry Hair, Vitamin E and Sunflower Seed Oil
20,000 Units Sold/mo▼ 71.4%
4
OLAPLEX N°.4 Bond Maintenance™ Strengthening Shampoo | Bond Repair | For Medium, Thick, or Coarse Hair; Daily Use for Straight, Wavy, Curly, and Coily Hair of All Porosity Levels
B07D37PQGL
$32.99
4.6 (83.6K)
OLAPLEX N°.4 Bond Maintenance™ Strengthening Shampoo | Bond Repair | For Medium, Thick, or Coarse Hair; Daily Use for Straight, Wavy, Curly, and Coily Hair of All Porosity Levels
10,000 Units Sold/mo▼ 75.0%
5
OLAPLEX N°.5 Bond Maintenance™ Strengthening Conditioner | Repair | For Medium-To-Coarse Hair; Color-Safe, Sulfate-Free Formula For All Hair Types And Textures
B07D37SBHF
$34.00
4.6 (85K)
OLAPLEX N°.5 Bond Maintenance™ Strengthening Conditioner | Repair | For Medium-To-Coarse Hair; Color-Safe, Sulfate-Free Formula For All Hair Types And Textures
10,000 Units Sold/mo▼ 66.7%
10
Kerastase Nutritive 8H Magic Night Serum - Overnight Treatment for Dry Hair, Enhances Shine, Nourishes and Reduces Frizz, With Plant-Based Proteins, For All Hair Types
B0BZZJWGPQ
$62.00
4.6 (10K)
Kerastase Nutritive 8H Magic Night Serum - Overnight Treatment for Dry Hair, Enhances Shine, Nourishes and Reduces Frizz, With Plant-Based Proteins, For All Hair Types
10,000 Units Sold/mo▼ 60.0%
View All 127 Products & Deep InsightsGet full access to sales data, trends, and market analysis

For sellers and category managers benchmarking the k18 hair treatment price landscape, we segmented all 127 tracked listings in Amazon's live "k18 hair treatment" search results across the full price spectrum, and surfaced the top 3 price tiers by share below to highlight where competition concentrates and where pricing gaps exist.

Leading the distribution, the $20.00 ~ $50.00 band is the category's best k18 hair treatment price zone, absorbing 56% of the assortment (187 products) — this is where listing density is highest and where new entrants face the steepest competition for share-of-voice. Use the tier breakdown below to identify the top-ranking ASIN, monthly sales velocity, and rating profile within each band — essential inputs for pricing strategy, sourcing decisions, and competitive benchmarking in the k18 hair treatment category.

Top 3 Price Tiers

$20.00 ~ $50.00 is the most competitive price tier, containing 56% of tracked products.

Sweet Spot
$20.00 ~ $50.00
Tier 1
56%
187 products

Top products in this price tier

#1
B09HR5KSR8
$29.00
50k Units Sold/mo
Unlock Top Performers
#2
$10.00 ~ $20.00
Tier 2
16%
54 products
$50.00 ~ $100.00
Tier 3
16%
52 products
$0.00 ~ $10.00
8%
Unlock to view all price tier distributions and their ASIN sales contributions

"K18 hair treatment" Search Volume and Market Trends on Amazon

Amazon keyword search volume data for "k18 hair treatment" in the US marketplace. This report provides insights into keyword search volume, Amazon search trends, competition levels, and conversion efficiency for sellers and brands.

During the week of 2026-08-09 to 2026-08-15, the Amazon USweekly search volume for "k18 hair treatment" was approximately 323 searches. The keyword currently holds an Amazon Search Frequency Rank (SFR) of #561,081, climbing 138,064 positions from the previous week. Additionally, the top 3 products for this keyword capture 72.1% of the total click share and 64.7% of the conversion share, indicating the level of market concentration.

Amazon Search Term
Weekly

k18 hair treatment

ASINSIGHT
Search Frequency Rank
561,081
138,064
Search Volume
323
26.2%
Top 3 Click Share
72.1%
Top 3 Conv. Share
64.7%

Search Volume Trend

Past 3 Years
Past 4 Months
Recent 8 months
Weekly Search Volume
323
View full trends for the past 3 years
AugSepOctNovDecJanFebMarAprMayJunJulAug

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