---
title: "Shower Cap — $6.6M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/beauty-personal-care/shower-cap"
last_updated: "2026-08-10T06:08:40.569Z"
locale: en
meta:
description: "Niche score 61/100 · $6.6M/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 61/100 · $6.6M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Shower Cap — $6.6M/yr Amazon US Niche (2026) - Flapen"
---
# **shower cap**
**Worth a look**
Shows a $6.6M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 99Growth 19Conversion 95Competition 63Returns 93Price range 35Avg price 24Brand share 66Review moat 24Quality gap 40
**Market size**
**Incredible****$6.6M**
$6.6M/yr · 6.1M searches
**Conversion**
**Incredible****12.5%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Great****1.1%**
return rate — above 5% kills the launch gate
**Brand share**
**Good****65%**
top-5 brand share — brands hold most of the demand
**Competition**
**Good****47%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Price range**
**Okay****$3.66–$21.00**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Bad****6,740.76**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Bad****$8.62**
avg listing price — sweet spot $15–$100
**Growth**
**Bad****-11.9%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, shower cap is a $6.6M/yr Amazon United States market (6.1M searches/yr). The top 5 brands hold 65% of demand. Verdict: Worth a look — 61/100.
Data updated Jul 15, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **shower cap market data**
- **Units sold / yr**
- **600K–800K**
- avg 15,000–20,000/product
- **Revenue / yr**
- **$5.2M–$6.9M**
- units × avg price
- **Conversion rate**
- **12.5%**
- **Avg BSR**
- **#17**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **1.1%**
- **Avg brand age**
- **44 months**
- **Avg seller age**
- **160 days**
## **Competition & brand share**
The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**21 **▼falling
**Sellers**
**357**
**Top-5 brand share**
**65%**
Top 20: 99%
**Top-5 click share**
**47%**
Top 20: 84%
**Open market**
**29%**
- Edoneery29% - CHFONG17% - YANIBEST9% - Pengxiaomei6% - Years calm6% - Kitsch5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -11.9% search growth over the last 90 days.
150K100KPrime Day '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/us/beauty-personal-care/shower-cap/trend)
## **Top shower cap search terms**
- **shower cap**3.4M/yr-9.3%10.1% conv. - **shower caps for women reusable waterproof**823K/yr-18.0%11.1% conv. - **shower caps**580K/yr-11.6%11.4% conv. - **shower cap for women**498K/yr-12.9%10.7% conv. - **large shower cap**127K/yr-4.9%5.7% conv. - **shower cap for long hair**73K/yr+4.3%4.4% conv. - **extra large shower cap**53K/yr+6.5%4.3% conv. - **reusable shower caps**55K/yr-9.2%6.7% conv. - **xl shower cap**42K/yr+9.3%4.3% conv. - **waterproof shower cap**42K/yr-17.7%5.0% conv. [**All search terms **](https://flapen.com/research/us/beauty-personal-care/shower-cap/search-terms)
## **Top shower cap 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%5%$329K10%$658K15%$987K20%$1.3M1001K10K100K 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**Reusable Shower Cap for Women Large Waterproof Shower Bonnet Washable Elastic Band Bath Hair Hat for Long Hair Braids(Pink)**Edoneery**$7.74**4.6★8,376 rev](https://www.amazon.com/dp/B0BJQW1CMR) [2**Shower Caps for Women 4 PCS Elastic and Reusable Bath Caps Double Waterproof Layers Shower Cap Bathing Shower Caps Environmental Protection Hair Bath Hat - Solid Color**CHFONG**$6.56**4.6★7,335 rev](https://www.amazon.com/dp/B0C9GQTPF4) [3**Reusable Shower Cap for Women Large Waterproof Shower Bonnet Washable Elastic Band Bath Hair Hat for Long Hair Braids(Green)**Edoneery**$7.72**4.6★8,376 rev](https://www.amazon.com/dp/B0C6DZ89ZB) [4**Yanibest Satin Lined Shower Cap for Women Reusable Waterproof Frizz Free & Large Bath Cap with Soft Elastic Band Luxury Hair Protection Caps (Peachy Pink)**YANIBEST**$12.40**4.7★503 rev](https://www.amazon.com/dp/B0FWZYK9QL) [5**Shower Cap 3 Pcs Waterproof Reusable Shower Caps Bath Hair Hat for Women Men Kids**Pengxiaomei**$4.23**4.3★20,828 rev](https://www.amazon.com/dp/B089B19NSD)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Yanibest Satin Lined Shower Cap for Women Reusable Waterproof Frizz Free & Large Bath Cap with Soft Elastic Band Luxury Hair Protection Caps (Peachy Pink)**YANIBEST**$12.40**503 rev8mo ago](https://www.amazon.com/dp/B0FWZYK9QL) [**Shower Cap for Women Double Layer Waterproof Bath Cap Reusable Hair Protector Large Waterproof Shower Bonnet Washable Elastic Band Bath Hair Hat for Long Hair Braids - Pink**CHFONG**$3.92**340 rev1y ago](https://www.amazon.com/dp/B0F8HPG6BL) [**Kitsch Luxury Shower Caps for Women Reusable Waterproof - Large Shower Cap for Women Non-slip Quick-dry Hair Cap for Long and Short Hair Comfortable and Stylish Design - Cherry Print**Kitsch**$21.00**14,593 rev1y ago](https://www.amazon.com/dp/B0DZYVRKNB) [**6 PCS Shower Caps for Women Double Side Waterproof Shower Cap PEVA Bath Caps for Shower Bathing Shower Caps - Candy Color**CHFONG**$4.28**1,605 rev1y ago](https://www.amazon.com/dp/B0DQCZNMJT) [**Years calm Shower Caps for Women Reusable Waterproof Double Layer Waterproof Fabric - Both Sides Usable Reversible Pattern & Solid Color Design Soft Elastic Keeps Hair Dry for shower Spa Travel**Years calm**$6.46**2,502 rev1y ago](https://www.amazon.com/dp/B0DQCS268Z)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Yanibest Satin Lined Shower Cap for Women Reusable Waterproof Frizz Free & Large Bath Cap with Soft Elastic Band Luxury Hair Protection Caps (Peachy Pink)**YANIBEST**$12.40**4.7★**▲ 178%**](https://www.amazon.com/dp/B0FWZYK9QL) [**Yanibest Shower Cap for Women - Frizz Free Satin Lined Shower Cap Waterproof Large Double Layer Reusable with Soft Elastic Band for Braids Long Hair**YANIBEST**$13.61**4.6★**▲ 131%**](https://www.amazon.com/dp/B08QD8R43B) [**Disposable Shower Caps 100 Pcs - Multi-Purpose Thickening Elastic Bath Cap Plastic Waterproof Clear Shower Caps Bath Shower Hair Caps Women Spa Home Use Hotel and Hair Salon Portable Travel(18.1)**AIDIQIU**$7.72**4.6★**▲ 127%**](https://www.amazon.com/dp/B07ZRVGXDF) [**Shower Cap for Women Double Layer Waterproof Bath Cap Reusable Hair Protector Large Waterproof Shower Bonnet Washable Elastic Band Bath Hair Hat for Long Hair Braids - Pink**CHFONG**$3.92**4.6★**▲ 55%**](https://www.amazon.com/dp/B0F8HPG6BL) [**Years calm Shower Caps for Women Reusable Waterproof Double Layer Waterproof Fabric - Both Sides Usable Reversible Pattern & Solid Color Design Soft Elastic Keeps Hair Dry for shower Spa Travel**Years calm**$6.46**4.6★**▲ 38%**](https://www.amazon.com/dp/B0DQCS268Z)
**~~View all trending →~~**
## **What buyers say about shower cap**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**17%
*“fit pretty comfortably”*
**Quality-Overall**17%
*“Its great for the price band quality”*
**Value For Money**8%
*“Excellent value”*
**Advertised Vs Actual Product**8%
*“As described”*
**Moist/Dry**7%
*“Keeps my hair dry”*
**Comfort-Overall**4%
*“comfortable to use”*
**Ease Of Use**4%
*“easy to clean”*
**Durability**3%
*“Beautiful and durable”*
**Water Resistance**3%
*“Definitely waterproof”*
**Stretchability/Expandability/Elasticity**3%
*“Good elastic”*
### **What buyers complain about **
**Size-Overall**34%
*“EXTREMELY SMALL”*
**Quality-Overall**5%
*“Cheap quality”*
**Smell**4%
*“Smells like fish”*
**Stretchability/Expandability/Elasticity**4%
*“Elastic is Too Tight”*
**Water Resistance**4%
*“does not allow water to seep in”*
**Moist/Dry**4%
*“No moisture gets through”*
**Thickness**3%
*“Thin plastic”*
**Suitability Long Hair**3%
*“too big for my hair”*
**Durability**2%
*“it broke immediately”*
**Advertised Vs Actual Product**2%
*“False advertisement”*
### **Top return reasons **
**Size-Overall**51%
**Advertised Vs Actual Product**8%
**Material Quality**5%
**Quality-Overall**4%
**Smell**3%
**Stretchability/Expandability/Elasticity**3%
**Water Resistance**2%
**Thin**2%
**Suitability Long Hair**2%
**Color**2%
## **Common questions**
- **Is shower cap profitable to sell on Amazon United States?**
- The niche generates $6.6M/yr across 34 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -11.9%. Flapen's verdict: Worth a look (61/100).
- **How competitive is the shower cap niche?**
- 21 brands and 357 sellers compete. The top 5 products take 47% of clicks and top 5 brands hold 65% of demand.
- **What do buyers complain about in shower cap?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Smell. The return rate is 1.1%.
- **When does demand for shower cap peak?**
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- **What does it cost to enter the shower cap niche?**
- Listings span $3.66–$21.00; the average listing price is $8.62 (sweet spot $15–$100). The average incumbent carries 6,741 reviews — the moat a new listing must climb.
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