---
title: "Korean Serum — $1.1M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/beauty-personal-care/korean-serum"
last_updated: "2026-08-11T17:40:21.489Z"
locale: en
meta:
description: "Niche score 64/100 · $1.1M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 64/100 · $1.1M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Korean Serum — $1.1M/yr Amazon US Niche (2026) - Flapen"
---
# **korean serum**
**Worth a look**
Shows low returns (0.8%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 79Growth 21Conversion 47Competition 91Returns 96Price range 83Avg price 82Brand share 83Review moat 20Quality gap 35
**Returns**
**Incredible****0.8%**
return rate — above 5% kills the launch gate
**Competition**
**Great****24%**
top-5 click share — an open shelf
**Brand share**
**Great****52%**
top-5 brand share — no brand owns this niche
**Price range**
**Great****$5.86–$65.09**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Great****$17.75**
avg listing price — sweet spot $15–$100
**Market size**
**Great****$1.1M**
$1.1M/yr · 1.6M searches
**Conversion**
**Okay****3.8%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-7.6%**
90-day search growth — must beat 0% to launch
**Review moat**
**Bad****13,185.63**
avg incumbent reviews — the moat a new listing must climb
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%")
According to Flapen's Amazon United States niche tracking, korean serum is a $1.1M/yr Amazon United States market (1.6M searches/yr). The top 5 brands hold 52% of demand. Verdict: Worth a look — 64/100.
Data updated Jul 16, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **korean serum market data**
- **Units sold / yr**
- **60K–80K**
- avg 500–750/product
- **Revenue / yr**
- **$1.1M–$1.4M**
- units × avg price
- **Conversion rate**
- **3.8%**
- **Avg BSR**
- **#118**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **0.4%**
- **Avg brand age**
- **43 months**
- **Avg seller age**
- **115 days**
## **Competition & brand share**
Clicks spread well past the top 5 (24% combined) — an open shelf where new products get seen.
**Brands**
**46 **▲rising
**Sellers**
**787**
**Top-5 brand share**
**52%**
Top 20: 88%
**Top-5 click share**
**24%**
Top 20: 57%
**Open market**
**41%**
- The Ordinary12% - Good Molecules11% - SKIN100410% - Beauty of Joseon9% - medicube9% - ANUA7%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -7.6% search growth over the last 90 days.
50K30KSpike '24Holiday '24Prime Day '25Spike '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/us/beauty-personal-care/korean-serum/trend)
## **Top korean serum search terms**
- **brightening serum**273K/yr+9.4%2.9% conv. - **anti aging serum**210K/yr-10.3%2.7% conv. - **korean serum**176K/yr-12.1%2.9% conv. - **glow serum**122K/yr-7.6%3.8% conv. - **skin brightening serum**107K/yr-17.6%2.9% conv. - **ceramide serum**81K/yr-13.4%3.5% conv. - **face serum korean**46K/yr+7.8%4.6% conv. - **night serum**50K/yr+13.0%2.0% conv. - **korean serum for face**56K/yr-4.6%3.3% conv. - **glass skin serum**45K/yr-5.0%2.9% conv. [**All search terms **](https://flapen.com/research/us/beauty-personal-care/korean-serum/search-terms)
## **Top korean 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%2%$21K4%$43K6%$64K8%$85K101001K10K100K1.0M Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Good Molecules Daily Brightening Serum with Beta Arbutin 3% & Hyaluronic Acid Brightening Serum for Dark Spots & Uneven Tone Face Skincare 1 fl oz (30 ml)**Good Molecules**$7.92**4.6★5,134 rev](https://www.amazon.com/dp/B091MGP94B) [2**Beauty of Joseon Glow Deep Serum Rice Alpha-Arbutin for Uneven Dull Skin Tone Daily Korean Skin Care for Men and Women 30ml 1.01 fl.oz**Beauty of Joseon**$15.53**4.5★9,667 rev](https://www.amazon.com/dp/B09DLFCB69) [3**EQQUALBERRY Vitamin Illuminating Serum | Niacinamide 4% & TXA | Brightening Vitamin C Serum for Face Glow with Hyaluronic Acid | Dark Spot & Uneven Tone Care | Korean Skincare 1.01 fl oz**EQQUALBERRY**$18.09**4.3★15,079 rev](https://www.amazon.com/dp/B0D8W1YVBX) [4**medicube PDRN Pink Peptide Serum with Salmon DNA | Pink Glow Serum with Peptides & Niacinamide for Hydration & Firm-Looking Skin | Uneven Tone Care | Korean Skincare 1.01 fl. Oz**medicube**$16.93**4.7★17,956 rev](https://www.amazon.com/dp/B0DBF65JYY) [5![[Hudsons Pick] SKIN1004 Madagascar Centella Ampoule Korean Face Serum with Centella Asiatica for Hydrating & Moisturizing Soothing Facial Serum for Skin Balance Korean Skin Care 3.38 fl.oz 100ml](https://m.media-amazon.com/images/I/31Kxg2RcOgL.jpg)**\[Hudsons Pick\] SKIN1004 Madagascar Centella Ampoule Korean Face Serum with Centella Asiatica for Hydrating & Moisturizing Soothing Facial Serum for Skin Balance Korean Skin Care 3.38 fl.oz 100ml**SKIN1004**$15.54**4.7★9,046 rev](https://www.amazon.com/dp/B06Y15D1LH)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Truly Beauty Brightening Body Serum | Dark Spot Corrector with Vitamin C & Tranexamic Acid | Helps Fade Hyperpigmentation Dark Spots & Uneven Skin Tone | Clinical Strength Formula**Truly**$14.91**69 rev6mo ago](https://www.amazon.com/dp/B0GDP1QQYM) [**medicube Kojic Acid Turmeric Clarifying & Balancing Capsule Serum for Troubled Skin | Soothing & Brightening Facial Serum | Niacinamide & Glow Capsules for Hydration and Barrier Support | 1.01 fl.oz**medicube**$17.04**2,092 rev1y ago](https://www.amazon.com/dp/B0FG7VLJKG) [**Beauty of Joseon Glow Serum Propolis and Niacinamide Hydrating Facial Soothing Moisturizer for Uneven Skin Tone Korean Skin Care 30ml 1 fl.oz**Beauty of Joseon**$15.70**1,503 rev1y ago](https://www.amazon.com/dp/B0F8LBX37X) [**BYOMA Phyto-Mucin Glow Serum - Mucin Face Serum for Glass Skin - Plumps Primes + Hydrates - Flawless Primer and Makeup Base - Strengthens Skin Barrier - 1.35 fl.oz**BYOMA**$14.80**1,753 rev1y ago](https://www.amazon.com/dp/B0DR9VMF5N) [**medicube PDRN Pink Peptide Serum with Salmon DNA | Pink Glow Serum with Peptides & Niacinamide for Hydration & Firm-Looking Skin | Uneven Tone Care | Korean Skincare 1.01 fl. Oz**medicube**$16.93**17,956 rev1y ago](https://www.amazon.com/dp/B0DBF65JYY)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Truly Beauty Brightening Body Serum | Dark Spot Corrector with Vitamin C & Tranexamic Acid | Helps Fade Hyperpigmentation Dark Spots & Uneven Skin Tone | Clinical Strength Formula**Truly**$14.91**4.3★**▲ 327%**](https://www.amazon.com/dp/B0GDP1QQYM) [![[Hudsons Pick] SKIN1004 Madagascar Centella Ampoule Korean Face Serum with Centella Asiatica for Hydrating & Moisturizing Soothing Facial Serum for Skin Balance Korean Skin Care 3.38 fl.oz 100ml](https://m.media-amazon.com/images/I/31Kxg2RcOgL.jpg)**\[Hudsons Pick\] SKIN1004 Madagascar Centella Ampoule Korean Face Serum with Centella Asiatica for Hydrating & Moisturizing Soothing Facial Serum for Skin Balance Korean Skin Care 3.38 fl.oz 100ml**SKIN1004**$15.54**4.7★**▲ 175%**](https://www.amazon.com/dp/B06Y15D1LH) [**SKIN1004 Probio Cica Intensive Ampoule Centella Serum for Face with Ceramide Facial Serum for Nourishing & Soothing Centella Ampoule for Skin Barrier Support Korean Skin Care 1.69fl.oz / 50ml**SKIN1004**$14.93**4.7★**▲ 89%**](https://www.amazon.com/dp/B0BTRWGQNV) [**Good Molecules Discoloration Correcting Serum - Serum to Target Dark Spots and Discoloration - Skin Care for Face 1 fl oz**Good Molecules**$11.99**4.4★**▲ 62%**](https://www.amazon.com/dp/B08RJ4ZHXJ) [**medicube Kojic Acid Turmeric Clarifying & Balancing Capsule Serum for Troubled Skin | Soothing & Brightening Facial Serum | Niacinamide & Glow Capsules for Hydration and Barrier Support | 1.01 fl.oz**medicube**$17.04**4.5★**▲ 58%**](https://www.amazon.com/dp/B0FG7VLJKG)
**~~View all trending →~~**
## **What buyers say about korean serum**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Suitability Combination Skin**15%
*“Good for the skin”*
**Quality-Overall**13%
*“such a nice quality bottle”*
**Moist/Dry**11%
*“Great hydrating”*
**Soft Feel**9%
*“Gentle on skin”*
**Brightness/Shine/Glow**7%
*“Gives a nice glow”*
**Value For Money**7%
*“they are affordable”*
**Suitability Dry Skin**5%
*“Great for Dry Skin”*
**Absorbency**3%
*“Absorbed well”*
**Smell**3%
*“Interesting smell”*
**Symptom Reduction**2%
*“Reduces fine lines”*
### **What buyers complain about **
**Functionality-Overall**12%
*“DIDN'T WORK”*
**Allergies**10%
*“Allergic Reaction”*
**Smell**6%
*“Weird smell”*
**Skin Health**6%
*“burned my face”*
**Symptom Reduction**6%
*“No improvement”*
**Value For Money**5%
*“Expensive”*
**Moist/Dry**4%
*“No hydration”*
**Adhesion/Stickiness**4%
*“Why so sticky”*
**Suitability Dry Skin**3%
*“Not for dry skin”*
**Advertised Vs Actual Product**3%
*“Looks can be deceiving”*
### **Top return reasons **
**Functionality-Overall**15%
**Advertised Vs Actual Product**11%
**Value For Money**9%
**Smell**7%
**Moist/Dry**5%
**Product Condition**5%
**Skin Health**5%
**Leak-Proof**4%
**Adhesion/Stickiness**4%
**Texture/Consistency-Overall**3%
## **Common questions**
- **Is korean serum profitable to sell on Amazon United States?**
- The niche generates $1.1M/yr across 90 tracked products. 9 of 9 products launched in the last 360 days are still selling. 90-day search growth is -7.6%. Flapen's verdict: Worth a look (64/100).
- **How competitive is the korean serum niche?**
- 46 brands and 787 sellers compete. The top 5 products take 24% of clicks and top 5 brands hold 52% of demand.
- **What do buyers complain about in korean serum?**
- Top complaints mined from reviews: Functionality-Overall, Allergies, Smell. The return rate is 0.8%.
- **When does demand for korean serum peak?**
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- **What does it cost to enter the korean serum niche?**
- Listings span $5.86–$65.09; the average listing price is $17.75 (sweet spot $15–$100). The average incumbent carries 13,186 reviews — the moat a new listing must climb.
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