---
title: "Sun Serum — $40K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/beauty-personal-care/sun-serum"
last_updated: "2026-08-10T08:33:55.908Z"
locale: en
meta:
description: "Niche score 51/100 · $40K/yr market · 51K searches/yr. A concentrated shelf (top 5 take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 51/100 · $40K/yr market · 51K searches/yr. A concentrated shelf (top 5 take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Sun Serum — $40K/yr Amazon US Niche (2026) - Flapen"
---
# **sun serum**
**Worth a look**
Shows low returns (0.2%), but a concentrated shelf (top 5 take 100% of clicks) keeps it on the watch list.
Market size 10Growth 96Conversion 48Competition 0Returns 99Price range 95Avg price 88Brand share 0Review moat 87Quality gap 65
**Returns**
**Incredible****0.2%**
return rate — above 5% kills the launch gate
**Growth**
**Incredible****+139.6%**
90-day search growth — must beat 0% to launch
**Price range**
**Incredible****$17.25–$23.63**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Great****$20.11**
avg listing price — sweet spot $15–$100
**Review moat**
**Great****259.8**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Okay****3.9%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Bad****$40K**
$40K/yr · 51K searches
**Competition**
**Bad****100%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
**Signals**[** Trending**](https://flapen.com/research/niches?market=us&signal=trending "Search growth > 100% (90d)") [** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** Out of Stock**](https://flapen.com/research/niches?market=us&signal=out_of_stock "OOS rate > 10%")
According to Flapen's Amazon United States niche tracking, sun serum is a $40K/yr Amazon United States market (51K searches/yr). The top 5 brands hold 100% of demand. Verdict: Worth a look — 51/100.
Data updated Jul 17, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **sun serum market data**
- **Units sold / yr**
- **2K–2K**
- avg 100–250/product
- **Revenue / yr**
- **$30K–$40K**
- units × avg price
- **Conversion rate**
- **3.9%**
- **Avg BSR**
- **#1,857**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **1.4%**
- **Avg brand age**
- **39 months**
- **Avg seller age**
- **127 days**
## **Competition & brand share**
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**4 **▼falling
**Sellers**
**18**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**100%**
Top 20: 100%
**Open market**
**0%**
- MEDIHEAL51% - Espoir38% - SKIN10049% - ROUND LAB3%
## **Top sun serum search terms**
- **sun serum**17K/yr+81.6%1.6% conv. - **mediheal sunscreen**12K/yr+243.2%7.6% conv. - **espoir sun serum**6K/yr+158.3%2.1% conv. - **espoir water splash sun serum**4K/yr+177.7%2.3% conv. - **mediheal sun serum**5K/yr+153.7%6.0% conv. - **sun serum korean**4K/yr+54.3%2.8% conv. - **water splash sun serum**2K/yr+213.6%1.3% conv. [**All search terms **](https://flapen.com/research/us/beauty-personal-care/sun-serum/search-terms)
## **Top sun 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%15%$6K30%$12K45%$18K60%$24K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 5 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**MEDIHEAL Madecassoside Moisture Sun Serum SPF 50+ Hydrating Korean Sunscreen for Face Lightweight Serum Texture No White Cast Soothing & Dewy Glow Finish Broad Spectrum UVA/UVB 1.69 fl oz**MEDIHEAL**$17.25**4.2★39 rev](https://www.amazon.com/dp/B0GRG889H8) [2**espoir Water Splash Sun Serum SPF50+ PA+++3 000ppm Caffeine for Reducing Puffiness Enhancing Skin Elasticity Non-Oily Hydrating Sunscreen Vegan Beach Essentials Clear Sunscreen1.69 Fl Oz.**Espoir**$21.58**4.3★76 rev](https://www.amazon.com/dp/B0DHVDSVGZ) [3**SKIN1004 Centella Hyalu-Cica Water-Fit Sun Serum UV Korean Sunscreen SPF 50 Centella Sunscreen Travel Essentials Sunscreen with Hyaluronic Acid No White Cast Korean Skin Care 1.69 fl.oz / 50ml**SKIN1004**$18.17**4.5★1,043 rev](https://www.amazon.com/dp/B0FXH5LHN8) [4![Mediheal Derma Cream [Madecassoside] - Soothing Korean Face Moisturizer with Niacinamide Squalane & Ceramide - Barrier Repair Dark Spot & Acne Mark Care for Sensitive Skin (1.69 fl oz)](https://m.media-amazon.com/images/I/31HcHYCsaDL.jpg)**Mediheal Derma Cream \[Madecassoside\] - Soothing Korean Face Moisturizer with Niacinamide Squalane & Ceramide - Barrier Repair Dark Spot & Acne Mark Care for Sensitive Skin (1.69 fl oz)**MEDIHEAL**$19.95**4.6★90 rev](https://www.amazon.com/dp/B0FXFVQ363) [5**ROUND LAB Birch Juice Moisturizing Sun Serum SPF 50 PDRN Hyaluronic Acid Serum Airy Texture Sunscreen For Face No White Cast Fragrance Free protector solar Korean Skin Care 1.69 Fl Oz**ROUND LAB**$23.63**4.2★51 rev](https://www.amazon.com/dp/B0GXF8YXXV)
### **Newest**
by launch date
[**ROUND LAB Birch Juice Moisturizing Sun Serum SPF 50 PDRN Hyaluronic Acid Serum Airy Texture Sunscreen For Face No White Cast Fragrance Free protector solar Korean Skin Care 1.69 Fl Oz**ROUND LAB**$23.63**51 rev3mo ago](https://www.amazon.com/dp/B0GXF8YXXV) [**MEDIHEAL Madecassoside Moisture Sun Serum SPF 50+ Hydrating Korean Sunscreen for Face Lightweight Serum Texture No White Cast Soothing & Dewy Glow Finish Broad Spectrum UVA/UVB 1.69 fl oz**MEDIHEAL**$17.25**39 rev4mo ago](https://www.amazon.com/dp/B0GRG889H8) [![Mediheal Derma Cream [Madecassoside] - Soothing Korean Face Moisturizer with Niacinamide Squalane & Ceramide - Barrier Repair Dark Spot & Acne Mark Care for Sensitive Skin (1.69 fl oz)](https://m.media-amazon.com/images/I/31HcHYCsaDL.jpg)**Mediheal Derma Cream \[Madecassoside\] - Soothing Korean Face Moisturizer with Niacinamide Squalane & Ceramide - Barrier Repair Dark Spot & Acne Mark Care for Sensitive Skin (1.69 fl oz)**MEDIHEAL**$19.95**90 rev7mo ago](https://www.amazon.com/dp/B0FXFVQ363) [**SKIN1004 Centella Hyalu-Cica Water-Fit Sun Serum UV Korean Sunscreen SPF 50 Centella Sunscreen Travel Essentials Sunscreen with Hyaluronic Acid No White Cast Korean Skin Care 1.69 fl.oz / 50ml**SKIN1004**$18.17**1,043 rev8mo ago](https://www.amazon.com/dp/B0FXH5LHN8) [**espoir Water Splash Sun Serum SPF50+ PA+++3 000ppm Caffeine for Reducing Puffiness Enhancing Skin Elasticity Non-Oily Hydrating Sunscreen Vegan Beach Essentials Clear Sunscreen1.69 Fl Oz.**Espoir**$21.58**76 rev1y ago](https://www.amazon.com/dp/B0DHVDSVGZ)
### **Trending**
90-day click momentum
[**MEDIHEAL Madecassoside Moisture Sun Serum SPF 50+ Hydrating Korean Sunscreen for Face Lightweight Serum Texture No White Cast Soothing & Dewy Glow Finish Broad Spectrum UVA/UVB 1.69 fl oz**MEDIHEAL**$17.25**4.2★**▲ 28%**](https://www.amazon.com/dp/B0GRG889H8) [**ROUND LAB Birch Juice Moisturizing Sun Serum SPF 50 PDRN Hyaluronic Acid Serum Airy Texture Sunscreen For Face No White Cast Fragrance Free protector solar Korean Skin Care 1.69 Fl Oz**ROUND LAB**$23.63**4.2★**▲ 28%**](https://www.amazon.com/dp/B0GXF8YXXV) [![Mediheal Derma Cream [Madecassoside] - Soothing Korean Face Moisturizer with Niacinamide Squalane & Ceramide - Barrier Repair Dark Spot & Acne Mark Care for Sensitive Skin (1.69 fl oz)](https://m.media-amazon.com/images/I/31HcHYCsaDL.jpg)**Mediheal Derma Cream \[Madecassoside\] - Soothing Korean Face Moisturizer with Niacinamide Squalane & Ceramide - Barrier Repair Dark Spot & Acne Mark Care for Sensitive Skin (1.69 fl oz)**MEDIHEAL**$19.95**4.6★**— 0%**](https://www.amazon.com/dp/B0FXFVQ363) [**espoir Water Splash Sun Serum SPF50+ PA+++3 000ppm Caffeine for Reducing Puffiness Enhancing Skin Elasticity Non-Oily Hydrating Sunscreen Vegan Beach Essentials Clear Sunscreen1.69 Fl Oz.**Espoir**$21.58**4.3★**▼ 18%**](https://www.amazon.com/dp/B0DHVDSVGZ) [**SKIN1004 Centella Hyalu-Cica Water-Fit Sun Serum UV Korean Sunscreen SPF 50 Centella Sunscreen Travel Essentials Sunscreen with Hyaluronic Acid No White Cast Korean Skin Care 1.69 fl.oz / 50ml**SKIN1004**$18.17**4.5★**▼ 23%**](https://www.amazon.com/dp/B0FXH5LHN8)
## **What buyers say about sun serum**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Suitability Combination Skin**15%
*“Perfect for those with highly sensitive skin”*
**Moist/Dry**11%
*“Super hydrating: Leaves a gorgeous”*
**Weight Light**9%
*“Lightweight and love it”*
**Quality-Overall**5%
*“Excellent Product”*
**Soft Feel**5%
*“Feels good”*
**Texture/Consistency-Overall**5%
*“Great texture”*
**Absorbency**4%
*“absorbs well”*
**Suitability Dry Skin**4%
*“Perfect for anyone who has dry/sensitive skin”*
**Suitability Oily Skin**3%
*“Works great for oily skin”*
**Brightness/Shine/Glow**3%
*“It shines well”*
### **What buyers complain about **
**Allergies**14%
*“Allergic reaction”*
**Smell**11%
*“too strong of a scent”*
**Skin Health**6%
*“It completely melts into the skin”*
**Sensitivity-Overall**6%
*“Not for sensitive skin”*
**Suitability Oily Skin**5%
*“Not Perfect for Oily Skin”*
**Oily/Greasy**4%
*“Too greasy”*
**Moist/Dry**2%
*“not something that doubles as a moisturizer”*
**Value For Money**2%
*“A bit pricey for the amount given”*
**Suitability Dry Skin**2%
*“it does not dry down”*
**Thickness**2%
*“is thicker”*
### **Top return reasons **
**Advertised Vs Actual Product**14%
**Value For Money**10%
**Ingredients-Overall**9%
**Oily/Greasy**9%
**Smell**8%
**Texture/Consistency-Overall**4%
**Product Condition**4%
**Skin Health**4%
**Functionality-Overall**4%
**Language Issues**3%
## **Common questions**
- **Is sun serum profitable to sell on Amazon United States?**
- The niche generates $40K/yr across 5 tracked products. 4 of 4 products launched in the last 360 days are still selling. 90-day search growth is +139.6%. Flapen's verdict: Worth a look (51/100).
- **How competitive is the sun serum niche?**
- 4 brands and 18 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in sun serum?**
- Top complaints mined from reviews: Allergies, Smell, Skin Health. The return rate is 0.2%.
- **What does it cost to enter the sun serum niche?**
- Listings span $17.25–$23.63; the average listing price is $20.11 (sweet spot $15–$100). The average incumbent carries 260 reviews — the moat a new listing must climb.
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