---
title: "Korean Hyaluronic Acid Serum — $998K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/beauty-personal-care/korean-hyaluronic-acid-serum"
last_updated: "2026-08-11T16:51:52.157Z"
locale: en
meta:
description: "Niche score 49/100 · $998K/yr market · 449K searches/yr · $19.57 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 49/100 · $998K/yr market · 449K searches/yr · $19.57 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Korean Hyaluronic Acid Serum — $998K/yr Amazon US Niche (2026) - Flapen"
---
# **korean hyaluronic acid serum**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 78Growth 18Conversion 92Competition 27Returns 95Price range 87Avg price 86Brand share 0Review moat 20Quality gap 27
**Returns**
**Incredible****0.9%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****11.4%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Great****$12.22–$41.38**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Great****$19.57**
avg listing price — sweet spot $15–$100
**Market size**
**Great****$998K**
$998K/yr · 449K searches
**Competition**
**Okay****69%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Bad****12,909.24**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-14.4%**
90-day search growth — must beat 0% to launch
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, korean hyaluronic acid serum is a $998K/yr Amazon United States market (449K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jul–Dec. Verdict: Skip it — 49/100.
Data updated Jul 16, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **korean hyaluronic acid serum market data**
- **Units sold / yr**
- **40K–50K**
- avg 2,500–3,000/product
- **Revenue / yr**
- **$783K–$979K**
- units × avg price
- **Conversion rate**
- **11.4%**
- **Avg BSR**
- **#297**
- **Page quality**
- **0%**
- **Prime**
- **94%**
- **Sponsored**
- **76%**
- **Out of stock**
- **1.7%**
- **Avg brand age**
- **59 months**
- **Avg seller age**
- **118 days**
## **Competition & brand share**
The top 5 products take 69% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**2 **—flat
**Sellers**
**22**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**69%**
Top 20: 100%
**Open market**
**0%**
- COSRX82% - medicube18%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -14.4% search growth over the last 90 days.
100K60KSpike '24Holiday '24Spike '25Prime Day '25Black Friday '25Holiday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jul, Dec · busiest ÷ quietest = 4.2×
[**Open Trend **](https://flapen.com/research/us/beauty-personal-care/korean-hyaluronic-acid-serum/trend)
## **Top korean hyaluronic acid serum search terms**
- **cosrx moisturizer**209K/yr-15.6%10.7% conv. - **medicube hyaluronic acid**57K/yr-17.1%10.1% conv. - **cosrx hyaluronic acid**38K/yr-3.3%12.7% conv. - **cosrx moisturizer for face**24K/yr-12.7%10.4% conv. - **cosrx cream**17K/yr+15.6%6.1% conv. - **cosrx hyaluronic acid intensive cream**21K/yr-19.8%14.2% conv. - **cosrx face moisturizer**11K/yr+18.8%5.8% conv. - **medicube hyaluronic**7K/yr+8.4%9.8% conv. - **cosrx night cream**6K/yr+7.8%4.7% conv. - **medicube hyaluronic acid serum**8K/yr-38.4%7.5% conv. [**All search terms **](https://flapen.com/research/us/beauty-personal-care/korean-hyaluronic-acid-serum/search-terms)
## **Top korean hyaluronic acid serum 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%10%$100K20%$200K30%$299K40%$399K1001K10K100K1.0M Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 17 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**COSRX Hyaluronic Acid Moisturizing Cream Lightweight Non-Greasy Long-lasting Hydration for Glass Skin Daily Moisturizer for Sensitive Skin Moisture Barrier Repair Korean Skin Care 3.52 oz**COSRX**$19.24**4.6★8,487 rev](https://www.amazon.com/dp/B072FH17NJ) [2**COSRX Ceramide Skin Barrier Moisturizer for Face with 7 Ceramides Hyaluronic Acid & Panthenol Barrier Repair Face Cream for Dry & Sensitive Skin 2.7 oz Korean Face Moisturizer Korean Skin Care**COSRX**$20.44**4.7★1,281 rev](https://www.amazon.com/dp/B0DYNQ393Y) [3**COSRX Snail Mucin 92% Face Moisturizer 3.52 Oz Lightweight Moisturing Cream for Soft Glowy Skin Korean Skin Care Korean Moisturizer Face Cream**COSRX**$17.57**4.5★61,320 rev](https://www.amazon.com/dp/B01LEJ5MSK) [4**medicube Hyaluronic Multi Peptide PDRN Serum | Lightweight Hydrating Serum**medicube**$17.16**4.7★791 rev](https://www.amazon.com/dp/B0DXV9WQ7L) [5**COSRX Oil Free Lotion with Birch Sap Daily Acne Facial Moisturizer Hydrating Moisturizer for All Skin Types Korean Skin Care 3.38 fl.oz / 100ml**COSRX**$16.99**4.6★7,923 rev](https://www.amazon.com/dp/B01CLTKI4A)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**medicube Capsule Cream with Hyaluronic Acid | 120H Lasting Hydration Barrier Care Calming Daily Facial Moisturizer For All Skin Types | Panthenol & Ceramides | Korean Skincare 1.94 oz**medicube**$17.87**801 rev10mo ago](https://www.amazon.com/dp/B0FQ4K6845) [**medicube Jelly Cream with Hyaluronic Acid | Daily Moisturizer for All Skin Types | Long-lasting Hydration with Hyaluronic Acid Ceramides Multi Peptides | Supports Skins Natural Barrier | 1.69 fl.oz**medicube**$12.22**1,904 rev10mo ago](https://www.amazon.com/dp/B0FPQ3Z16S) [**COSRX Skin Barrier Moisturizing Body Cream | 100-Hour Hydration For Dry to Extremely Dry Skin with Ceramide & Hyaluronic Acid | Unscented Non-Greasy | 15.2 fl oz Korean Skin Care**COSRX**$21.65**1,281 rev10mo ago](https://www.amazon.com/dp/B0FNW6HCY4) [**COSRX Ceramide Skin Barrier Moisturizer for Face with 7 Ceramides Hyaluronic Acid & Panthenol Barrier Repair Face Cream for Dry & Sensitive Skin 2.7 oz Korean Face Moisturizer Korean Skin Care**COSRX**$20.44**1,281 rev1y ago](https://www.amazon.com/dp/B0DYNQ393Y) [**medicube Hyaluronic Multi Peptide PDRN Serum | Lightweight Hydrating Serum**medicube**$17.16**791 rev1y ago](https://www.amazon.com/dp/B0DXV9WQ7L)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**medicube Jelly Cream with Hyaluronic Acid | Daily Moisturizer for All Skin Types | Long-lasting Hydration with Hyaluronic Acid Ceramides Multi Peptides | Supports Skins Natural Barrier | 1.69 fl.oz**medicube**$12.22**4.6★**▲ 42%**](https://www.amazon.com/dp/B0FPQ3Z16S) [**COSRX AC Collection Lightweight Soothing Moisturizer 80ml / 2.70 fl.oz | Aloe Vera Leaves Extract 71.2% | Animal Testing Free Paraben Free**COSRX**$15.21**4.5★**▲ 38%**](https://www.amazon.com/dp/B07X2XC9KV) [**COSRX Ceramide Skin Barrier Moisturizer for Face with 7 Ceramides Hyaluronic Acid & Panthenol Barrier Repair Face Cream for Dry & Sensitive Skin 2.7 oz Korean Face Moisturizer Korean Skin Care**COSRX**$20.44**4.7★**▲ 37%**](https://www.amazon.com/dp/B0DYNQ393Y) [**medicube Hyaluronic Multi Peptide PDRN Serum | Lightweight Hydrating Serum**medicube**$17.16**4.7★**▲ 29%**](https://www.amazon.com/dp/B0DXV9WQ7L) [**COSRX Pure Sodium Hyaluronic Acid 3% Serum Hydratying & Moisture Boosting for Fine Lines & Wrinkles Repair Dry Skin 0.67fl.oz/20ml No Artificial Fragrance Korean Skin Care**COSRX**$19.40**4.3★**▲ 21%**](https://www.amazon.com/dp/B09ZYCVH8N)
**~~View all trending →~~**
## **What buyers say about korean hyaluronic acid serum**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Moist/Dry**24%
*“Super hydrating”*
**Suitability Combination Skin**12%
*“Works great on my sensitive skin”*
**Quality-Overall**9%
*“Excellent product”*
**Soft Feel**8%
*“My skin is so soft”*
**Value For Money**6%
*“they are affordable”*
**Suitability Dry Skin**5%
*“helps my dry skin”*
**Absorbency**4%
*“Absorbs good”*
**Brightness/Shine/Glow**4%
*“Glowing skin”*
**Weight Light**3%
*“Its a great very lightweight moisturizer”*
**Smell**2%
*“Smells nice”*
### **What buyers complain about **
**Moist/Dry**10%
*“Not moisturizing”*
**Allergies**8%
*“Skin irritation”*
**Adhesion/Stickiness**7%
*“still sticky”*
**Suitability Dry Skin**5%
*“NOT for dry skin”*
**Skin Health**5%
*“My face began burning”*
**Functionality-Overall**4%
*“Not effective”*
**Value For Money**3%
*“Not worth the price”*
**Smell**3%
*“The smell is odd”*
**Oily/Greasy**2%
*“Made my face very oily”*
**Thickness**2%
*“it's like a really thick layer”*
### **Top return reasons **
**Moist/Dry**13%
**Value For Money**11%
**Functionality-Overall**8%
**Adhesion/Stickiness**8%
**Advertised Vs Actual Product**7%
**Texture/Consistency-Overall**6%
**Suitability Dry Skin**5%
**Leak-Proof**4%
**Skin Health**4%
**Smell**4%
## **Common questions**
- **Is korean hyaluronic acid serum profitable to sell on Amazon United States?**
- The niche generates $998K/yr across 17 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is -14.4%. Flapen's verdict: Skip it (49/100).
- **How competitive is the korean hyaluronic acid serum niche?**
- 2 brands and 22 sellers compete. The top 5 products take 69% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in korean hyaluronic acid serum?**
- Top complaints mined from reviews: Moist/Dry, Allergies, Adhesion/Stickiness. The return rate is 0.9%.
- **When does demand for korean hyaluronic acid serum peak?**
- Demand peaks in Jul–Dec; the busiest month runs 4.2× the quietest.
- **What does it cost to enter the korean hyaluronic acid serum niche?**
- Listings span $12.22–$41.38; the average listing price is $19.57 (sweet spot $15–$100). The average incumbent carries 12,909 reviews — the moat a new listing must climb.
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