---
title: "Anua Vitamin C Serum — $252K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/beauty-personal-care/anua-vitamin-c-serum"
last_updated: "2026-08-08T02:56:40.791Z"
locale: en
meta:
description: "Niche score 40/100 · $252K/yr market · 190K searches/yr · $16.58 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 40/100 · $252K/yr market · 190K searches/yr · $16.58 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Anua Vitamin C Serum — $252K/yr Amazon US Niche (2026) - Flapen"
---
# **anua vitamin c serum**
**Skip it**
A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Market size 47Growth 20Conversion 79Competition 0Returns 96Price range 50Avg price 79Brand share 0Review moat 19Quality gap 50
**Returns**
**Incredible****0.8%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****8.0%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$16.58**
avg listing price — sweet spot $15–$100
**Quality gap**
**Good****4.5★**
avg incumbent rating — lower means beatable quality
**Price range**
**Good****$8.77–$21.30**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Okay****$252K**
$252K/yr · 190K searches
**Growth**
**Bad****-10.5%**
90-day search growth — must beat 0% to launch
**Review moat**
**Bad****15,347**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Bad****100%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, anua vitamin c serum is a $252K/yr Amazon United States market (190K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 40/100.
Data updated Jul 16, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **anua vitamin c serum market data**
- **Units sold / yr**
- **15K–20K**
- avg 2,000–2,500/product
- **Revenue / yr**
- **$249K–$332K**
- units × avg price
- **Conversion rate**
- **8.0%**
- **Avg BSR**
- **#194**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **25.0%**
- **Avg brand age**
- **56 months**
- **Avg seller age**
- **126 days**
## **Competition & brand share**
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**3 **▼falling
**Sellers**
**7**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**100%**
Top 20: 100%
**Open market**
**0%**
- COSRX91% - SeoulCeuticals5% - ELBBUB4%
## **Demand**
Weekly Amazon search volume, last 49 weeks — -10.5% search growth over the last 90 days.
60K40KSpike '25Black Friday '25Spike '26Aug '25Oct '25Nov '25Jan '26Mar '26May '26
[**Open Trend **](https://flapen.com/research/us/beauty-personal-care/anua-vitamin-c-serum/trend)
## **Top anua vitamin c serum search terms**
- **cosrx vitamin c**62K/yr-6.2%8.8% conv. - **cosrx vitamin c serum c-23**29K/yr-2.6%10.5% conv. - **20% vitamin c serum**17K/yr-6.4%2.5% conv. - **vitamin c serum 20%**15K/yr+14.1%2.3% conv. - **cosrx vitamin c serum**22K/yr-45.9%7.7% conv. - **cosrx the vitamin c 23 serum**8K/yr-5.8%7.7% conv. - **vitamin c serum cosrx**6K/yr-17.2%10.8% conv. - **cosrx vitamin c 13**5K/yr+19.2%9.0% conv. - **vitamin c cosrx**5K/yr-11.8%12.4% conv. - **vitamin c 20% serum**4K/yr-5.4%2.5% conv. [**All search terms **](https://flapen.com/research/us/beauty-personal-care/anua-vitamin-c-serum/search-terms)
## **Top anua vitamin c 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%20%$50K40%$101K60%$151K80%$202K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 4 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**COSRX Advanced Pure Vitamin C 23% Serum with Vitamin E & Glutathione Korean Vitamin C Serum for Fine Lines Uneven Skin Tone & Dull Skin 0.7oz Korean Skin Care**COSRX**$21.30**4.4★621 rev](https://www.amazon.com/dp/B0FWQGLTQV) [2**COSRX Pure Vitamin C 13% Serum (Renewal) with Vitamin E & Hyaluronic Acid Korean Vitamin C Serum Hydrating Facial Serum for Uneven Skin Tone Dull Skin 0.67 oz Korean Skin Care**COSRX**$18.16**4.6★165 rev](https://www.amazon.com/dp/B0FWQKKT1K) [3**SeoulCeuticals Korean Skin Care 20% Vitamin C Hyaluronic Acid Serum + CE Ferulic Acid - Potent Anti Aging Anti Wrinkle Korean Beauty 1oz**SeoulCeuticals**$18.09**4.4★27,797 rev](https://www.amazon.com/dp/B072K1LNNY) [4**Premium 20% Vitamin C Serum For Face with Hyaluronic Acid Retinol & Amino Acids - Boost Skin Collagen Hydrate & Plump Skin Anti Aging & Wrinkle Facial Serum 60ml**ELBBUB**$8.77**4.4★32,805 rev](https://www.amazon.com/dp/B0BNBF4LZR)
### **Newest**
by launch date
[**COSRX Advanced Pure Vitamin C 23% Serum with Vitamin E & Glutathione Korean Vitamin C Serum for Fine Lines Uneven Skin Tone & Dull Skin 0.7oz Korean Skin Care**COSRX**$21.30**621 rev9mo ago](https://www.amazon.com/dp/B0FWQGLTQV) [**COSRX Pure Vitamin C 13% Serum (Renewal) with Vitamin E & Hyaluronic Acid Korean Vitamin C Serum Hydrating Facial Serum for Uneven Skin Tone Dull Skin 0.67 oz Korean Skin Care**COSRX**$18.16**165 rev9mo ago](https://www.amazon.com/dp/B0FWQKKT1K) [**Premium 20% Vitamin C Serum For Face with Hyaluronic Acid Retinol & Amino Acids - Boost Skin Collagen Hydrate & Plump Skin Anti Aging & Wrinkle Facial Serum 60ml**ELBBUB**$8.77**32,805 rev3y ago](https://www.amazon.com/dp/B0BNBF4LZR) [**SeoulCeuticals Korean Skin Care 20% Vitamin C Hyaluronic Acid Serum + CE Ferulic Acid - Potent Anti Aging Anti Wrinkle Korean Beauty 1oz**SeoulCeuticals**$18.09**27,797 rev9y ago](https://www.amazon.com/dp/B072K1LNNY)
### **Trending**
90-day click momentum
[**COSRX Pure Vitamin C 13% Serum (Renewal) with Vitamin E & Hyaluronic Acid Korean Vitamin C Serum Hydrating Facial Serum for Uneven Skin Tone Dull Skin 0.67 oz Korean Skin Care**COSRX**$18.16**4.6★**▲ 26%**](https://www.amazon.com/dp/B0FWQKKT1K) [**COSRX Advanced Pure Vitamin C 23% Serum with Vitamin E & Glutathione Korean Vitamin C Serum for Fine Lines Uneven Skin Tone & Dull Skin 0.7oz Korean Skin Care**COSRX**$21.30**4.4★**— 4%**](https://www.amazon.com/dp/B0FWQGLTQV) [**SeoulCeuticals Korean Skin Care 20% Vitamin C Hyaluronic Acid Serum + CE Ferulic Acid - Potent Anti Aging Anti Wrinkle Korean Beauty 1oz**SeoulCeuticals**$18.09**4.4★**▼ 39%**](https://www.amazon.com/dp/B072K1LNNY) [**Premium 20% Vitamin C Serum For Face with Hyaluronic Acid Retinol & Amino Acids - Boost Skin Collagen Hydrate & Plump Skin Anti Aging & Wrinkle Facial Serum 60ml**ELBBUB**$8.77**4.4★**▼ 47%**](https://www.amazon.com/dp/B0BNBF4LZR)
## **What buyers say about anua vitamin c serum**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**17%
*“As good as the expensive brands”*
**Suitability Combination Skin**15%
*“good in skin”*
**Brightness/Shine/Glow**8%
*“gives it shine”*
**Soft Feel**7%
*“This smooths out skin”*
**Value For Money**7%
*“Reasonably priced”*
**Smell**6%
*“is fragrance-free”*
**Absorbency**5%
*“absorbs well”*
**Moist/Dry**5%
*“Good Skin Moisturizer”*
**Suitability Dry Skin**4%
*“This makes it perfect for layering under moisturizer”*
**Efficiency**4%
*“This product is very effective”*
### **What buyers complain about **
**Smell**11%
*“Strong very unpleasant smell”*
**Allergies**7%
*“irritating”*
**Functionality-Overall**5%
*“Didn't notice any results”*
**Moist/Dry**5%
*“is not as dry”*
**Advertised Vs Actual Product**4%
*“Felt like this product was a little misleading”*
**Dilute/Watery**4%
*“It is very watery”*
**Thickness**3%
*“Very thin”*
**Suitability Dry Skin**3%
*“it destroyed my skin”*
**Leak-Proof**3%
*“it kind of drip all over”*
**Value For Money**3%
*“Definitely not really worth the purchase”*
### **Top return reasons **
**Leak-Proof**22%
**Functionality-Overall**9%
**Advertised Vs Actual Product**8%
**Smell**8%
**Moist/Dry**6%
**Value For Money**6%
**Skin Health**4%
**Ingredients-Overall**4%
**Dilute/Watery**3%
**Product Condition**3%
## **Common questions**
- **Is anua vitamin c serum profitable to sell on Amazon United States?**
- The niche generates $252K/yr across 4 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -10.5%. Flapen's verdict: Skip it (40/100).
- **How competitive is the anua vitamin c serum niche?**
- 3 brands and 7 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in anua vitamin c serum?**
- Top complaints mined from reviews: Smell, Allergies, Functionality-Overall. The return rate is 0.8%.
- **What does it cost to enter the anua vitamin c serum niche?**
- Listings span $8.77–$21.30; the average listing price is $16.58 (sweet spot $15–$100). The average incumbent carries 15,347 reviews — the moat a new listing must climb.
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