---
title: "Glutathione Serum — $747K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/beauty-personal-care/glutathione-serum"
last_updated: "2026-08-11T10:24:16.088Z"
locale: en
meta:
description: "Niche score 50/100 · $747K/yr market. Brand-locked demand (top 5 brands take 96% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 50/100 · $747K/yr market. Brand-locked demand (top 5 brands take 96% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Glutathione Serum — $747K/yr Amazon US Niche (2026) - Flapen"
---
# **glutathione serum**
**Worth a look**
Shows a sweet-spot price point ($28.83 avg), but brand-locked demand (top 5 brands take 96% of clicks) keeps it on the watch list.
Market size 71Growth 49Conversion 61Competition 25Returns 71Price range 53Avg price 95Brand share 10Review moat 43Quality gap 48
**Avg price**
**Incredible****$28.83**
avg listing price — sweet spot $15–$100
**Market size**
**Good****$747K**
$747K/yr · 486K searches
**Returns**
**Good****2.1%**
return rate — above 5% kills the launch gate
**Conversion**
**Good****5.3%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Good****$11.88–$172.32**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Okay****+19.6%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****2,245.79**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Okay****70%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Bad****96%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, glutathione serum is a $747K/yr Amazon United States market (486K searches/yr). The top 5 brands hold 96% of demand. Demand peaks in Apr–Nov. Verdict: Worth a look — 50/100.
Data updated Jul 16, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **glutathione serum market data**
- **Units sold / yr**
- **25K–30K**
- avg 2,000–2,500/product
- **Revenue / yr**
- **$721K–$865K**
- units × avg price
- **Conversion rate**
- **5.3%**
- **Avg BSR**
- **#446**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **86%**
- **Out of stock**
- **7.7%**
- **Avg brand age**
- **43 months**
- **Avg seller age**
- **122 days**
## **Competition & brand share**
The top 5 products take 70% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**7 **▲rising
**Sellers**
**43**
**Top-5 brand share**
**96%**
Top 20: 100%
**Top-5 click share**
**70%**
Top 20: 100%
**Open market**
**2%**
- numbuzin50% - medicube26% - Abib8% - ma:nyo6% - TOSOWOONG6% - Grospe2% - Open — no brand owns it (1 brand, 2%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +19.6% search growth over the last 90 days.
50K30KSpike '24Holiday '24Spike '25Prime Day '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Apr, Nov · busiest ÷ quietest = 2.4×
[**Open Trend **](https://flapen.com/research/us/beauty-personal-care/glutathione-serum/trend)
## **Top glutathione serum search terms**
- **glutathione serum**119K/yr+89.0%2.5% conv. - **numbuzin 5**52K/yr+43.7%6.5% conv. - **numbuzin no.5**82K/yr-26.1%7.3% conv. - **medicube age r**55K/yr-14.8%2.5% conv. - **glutathione serum for face**15K/yr+127.5%2.4% conv. - **medicube glutathione glow serum**13K/yr+30.3%4.7% conv. - **age r medicube**12K/yr+38.0%3.5% conv. - **abib glutathione dark spot serum**26K/yr-47.9%5.6% conv. - **numbuzin vitamin c**10K/yr+31.2%5.6% conv. - **glutathione skincare**11K/yr+53.6%1.6% conv. [**All search terms **](https://flapen.com/research/us/beauty-personal-care/glutathione-serum/search-terms)
## **Top glutathione 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%$75K20%$149K30%$224K40%$299K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 14 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**numbuzin No.5 Vitamin Concentrated Serum Dark Spot Care Glutathione & Vitamin Serum Korean Skincare Tranexamic Acid 4% Niacinamide 5% for a Radiant-Looking Glow 1.01 fl oz**numbuzin**$17.47**4.5★5,283 rev](https://www.amazon.com/dp/B0C61FD7P9) [2**medicube AGE-R Glutathione Glow Serum**medicube**$23.55**4.5★700 rev](https://www.amazon.com/dp/B0CN646H8X) [3**numbuzin No.5 Glutathione TXA Dark Spot Ampoule Targeted Tone Care Concentrate for Dark Spots & Uneven Skin Tranexamic Acid Niacinamide Vitamin Tree Water Korean Skincare 10.7g**numbuzin**$19.70**4.5★5,283 rev](https://www.amazon.com/dp/B0FZT6DPCD) [4**medicube Age-R Glutathione Glow Milky Toner**medicube**$17.81**4.6★1,266 rev](https://www.amazon.com/dp/B0DGG36V9J) [5**Abib Glutathiosome Dark Spot Serum Vita drop 1.69 fl.oz. Korean Skincare Dark Spot Hyperpigmentation Treatment Lightweight Hydrating Serum for Sensitive Uneven Skin**Abib**$17.80**4.3★772 rev](https://www.amazon.com/dp/B0DB1W9B21)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**MANYO Glutathione 7 Dark Spot Serum Niacinamide Serum for Uneven Skin Tone Dark Spot Remover for Face & Radiance Booster Korean Skincare 1.01 fl.oz (30ml)**ma:nyo**$18.27**156 rev6mo ago](https://www.amazon.com/dp/B0GGH9DCKK) [**numbuzin No.5 Glutathione TXA Dark Spot Ampoule Targeted Tone Care Concentrate for Dark Spots & Uneven Skin Tranexamic Acid Niacinamide Vitamin Tree Water Korean Skincare 10.7g**numbuzin**$19.70**5,283 rev8mo ago](https://www.amazon.com/dp/B0FZT6DPCD) [**Glutathione Serum 20000ppm Glutathione and Hyaluronic Acid Korean Face Serums for Women Dark Spot Serum Improve Skin Elasticity Reduces Hyperpigmentation Fine Lines & Wrinkles**Grospe**$11.88**16 rev1y ago](https://www.amazon.com/dp/B0F3D68CRY) [**The Ordinary GF 15% Solution Anti-Aging Formula for Visible Skin & Wrinkle Repair 1 Fl Oz**The Ordinary**$14.96**2,226 rev1y ago](https://www.amazon.com/dp/B0DTBZYRC7) [**medicube Age-R Glutathione Glow Milky Toner**medicube**$17.81**1,266 rev1y ago](https://www.amazon.com/dp/B0DGG36V9J)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**MANYO Glutathione 7 Dark Spot Serum Niacinamide Serum for Uneven Skin Tone Dark Spot Remover for Face & Radiance Booster Korean Skincare 1.01 fl.oz (30ml)**ma:nyo**$18.27**4.4★**▲ 234%**](https://www.amazon.com/dp/B0GGH9DCKK) [**The Ordinary GF 15% Solution Anti-Aging Formula for Visible Skin & Wrinkle Repair 1 Fl Oz**The Ordinary**$14.96**4.6★**▲ 195%**](https://www.amazon.com/dp/B0DTBZYRC7) [**numbuzin No.5 Glutathione TXA Dark Spot Ampoule Targeted Tone Care Concentrate for Dark Spots & Uneven Skin Tranexamic Acid Niacinamide Vitamin Tree Water Korean Skincare 10.7g**numbuzin**$19.70**4.5★**▲ 105%**](https://www.amazon.com/dp/B0FZT6DPCD) [**Glutathione Serum 20000ppm Glutathione and Hyaluronic Acid Korean Face Serums for Women Dark Spot Serum Improve Skin Elasticity Reduces Hyperpigmentation Fine Lines & Wrinkles**Grospe**$11.88**4.5★**▲ 66%**](https://www.amazon.com/dp/B0F3D68CRY) [**medicube AGE-R Glutathione Glow Serum**medicube**$23.55**4.5★**▲ 20%**](https://www.amazon.com/dp/B0CN646H8X)
**~~View all trending →~~**
## **What buyers say about glutathione serum**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Suitability Combination Skin**14%
*“It helps skin turn pretty”*
**Quality-Overall**10%
*“overall its a high-quality device”*
**Soft Feel**9%
*“nice and smooth”*
**Moist/Dry**8%
*“Very hydrating”*
**Brightness/Shine/Glow**8%
*“Gives glow”*
**Absorbency**5%
*“absorbs really well”*
**Value For Money**5%
*“reasonably priced”*
**Smell**4%
*“Love the smell”*
**Suitability Dry Skin**3%
*“This is so perfect for dry skin”*
**Ease Of Use**3%
*“Easy to use”*
### **What buyers complain about **
**Smell**13%
*“Unpleasant Smell”*
**Functionality-Overall**8%
*“No results”*
**Allergies**6%
*“Caused a rash”*
**Value For Money**6%
*“Waste of money”*
**Skin Health**5%
*“Made my skin worse”*
**Symptom Reduction**5%
*“I dont see any skin improvements”*
**Durability**3%
*“It doesnt seem durable at all”*
**Adhesion/Stickiness**3%
*“Too sticky”*
**Suitability Dry Skin**3%
*“Skin feels tighter. but not dry”*
**Moist/Dry**3%
*“Not very hydrating”*
### **Top return reasons **
**Functionality-Overall**24%
**Value For Money**17%
**Advertised Vs Actual Product**9%
**Smell**6%
**Defective Material/Parts**5%
**Skin Health**4%
**Charging**3%
**Suitability Combination Skin**2%
**Product Condition**2%
**Strength**2%
## **Common questions**
- **Is glutathione serum profitable to sell on Amazon United States?**
- The niche generates $747K/yr across 14 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is +19.6%. Flapen's verdict: Worth a look (50/100).
- **How competitive is the glutathione serum niche?**
- 7 brands and 43 sellers compete. The top 5 products take 70% of clicks and top 5 brands hold 96% of demand.
- **What do buyers complain about in glutathione serum?**
- Top complaints mined from reviews: Smell, Functionality-Overall, Allergies. The return rate is 2.1%.
- **When does demand for glutathione serum peak?**
- Demand peaks in Apr–Nov; the busiest month runs 2.4× the quietest.
- **What does it cost to enter the glutathione serum niche?**
- Listings span $11.88–$172.32; the average listing price is $28.83 (sweet spot $15–$100). The average incumbent carries 2,246 reviews — the moat a new listing must climb.
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