hair cap
Worth a lookShows low returns (1.5%), but prices mostly outside the sweet spot ($3.66–$15.16) keeps it on the watch list.
Returns
Great1.5%return rate — above 5% kills the launch gate
Brand share
Great55%top-5 brand share — no brand owns this niche
Competition
Good43%top-5 click share — leaders hold, buyers still browse
Conversion
Good5.7%search→purchase rate — share of searches ending in a sale
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Market size
Okay$179K$179K/yr · 322K searches
Avg price
Okay$9.74avg listing price — sweet spot $15–$100
Growth
Bad-2.2%90-day search growth — must beat 0% to launch
Review moat
Bad7,597.67avg incumbent reviews — the moat a new listing must climb
Price range
Bad$3.66–$15.16cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United States niche tracking, hair cap is a $179K/yr Amazon United States market (322K searches/yr). The top 5 brands hold 55% of demand. Verdict: Worth a look — 50/100.
Data updated Jul 13, 2026 · scored weekly · How we score niches
hair cap market data
- Units sold / yr
- 15K–20K
- avg 250–500/product
- Revenue / yr
- $146K–$195K
- units × avg price
- Conversion rate
- 5.7%
- Avg BSR
- #278
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 0.0%
- Avg brand age
- 44 months
- Avg seller age
- 152 days
Competition & brand share
The top 5 products take 43% of clicks — established leaders, but buyers still shop beyond them.Brands
22 falling
Sellers
32
Top-5 brand share
55%
Top 20: 98%
Top-5 click share
43%
Top 20: 84%
Open market
39%
- YANIBEST30%
- THINDUST9%
- GB Selected5%
- CAPLORD5%
- Confvrter5%
- Doitory5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -2.2% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.3×
Top hair cap search terms
- hair cap175K/yr
- hair cover78K/yr
- hair caps33K/yr
- hair covers18K/yr
- gorro para el cabello13K/yr
- cap for hair5K/yr
Top hair 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
YANIBEST Adjustable Satin Bonnet for Sleeping Women Double Layer Hair Wrap Reduce Friction Prevent Frizz Natural Curly Hair Blush Pink
YANIBEST$11.984.4★27,943 rev
YANIBEST Silk Bonnet for Men Women Hair Bonnet for Sleeping Double Layer Satin Bonnets for Black Women Curly Hair Sleep Cap Black
YANIBEST$12.904.5★3,923 rev
THINDUST 3Pcs Breathable Mesh Skull Cap Lightweight Quick Dry Sports Helmet Liner for Men Women Cooling Cycling Beanies
THINDUST$15.164.4★729 rev
Silk Bonnet for Women Satin Bonnet for Sleeping Large Sleep Cap with Elastic Tie Band for Curly Hair (Bean Paste Pink)
Confvrter$5.584.4★701 rev
Doitory Satin Silk Bonnet for Sleeping Double Layer Silk Sleep Cap for Men & Women Soft Satin Lined Bonnet for Natural & Curly Hair(Black)
Doitory$9.614.5★2,136 rev
Newest
by launch dateSilk Bonnet for Women Satin Bonnet for Sleeping Large Sleep Cap with Elastic Tie Band for Curly Hair (Bean Paste Pink)
Confvrter$5.58701 rev
THINDUST 3Pcs Breathable Mesh Skull Cap Lightweight Quick Dry Sports Helmet Liner for Men Women Cooling Cycling Beanies
THINDUST$15.16729 rev
THINDUST 3Pcs Breathable Mesh Skull Cap Lightweight Quick Dry Sports Helmet Liner for Men Women Cooling Cycling Beanies
THINDUST$15.15729 rev
CAPLORD Chemo Headwrap for Women Turban Headwear for Cancer Patients Skull Cap Hair Loss Cover Lightweight Head Covering Hat
CAPLORD$14.761,290 rev
Doitory Satin Silk Bonnet for Sleeping Double Layer Silk Sleep Cap for Men & Women Soft Satin Lined Bonnet for Natural & Curly Hair(Black)
Doitory$9.612,136 rev
Trending
90-day click momentumTHINDUST 3Pcs Breathable Mesh Skull Cap Lightweight Quick Dry Sports Helmet Liner for Men Women Cooling Cycling Beanies
THINDUST$15.164.4★
THINDUST 3Pcs Breathable Mesh Skull Cap Lightweight Quick Dry Sports Helmet Liner for Men Women Cooling Cycling Beanies
THINDUST$15.154.4★
100% Cotton Skull Caps Beanie Sleeping Hats for Men Women 2-Pack Black
Headshion$8.494.4★
ROYBENS Satin Bonnet Hair Bonnet for Sleeping- 4 Pack Large Bonnets for Women with Elastic Soft Band for Curly Hair Braids
ROYBENS$9.134.6★
Silk Satin Lined Bonnet Sleep Cap - Adjustable Stay on All Night Hair Wrap Cover Slouchy Beanie for Curly Hair Protection for Women and Men - Mixed Purple
GB Selected$14.784.3★
What buyers say about hair cap
What buyers praise and complain about, mined from review topics.What buyers love
“It fits snug”
“It was also very affordable for the quality”
“comfortable to use”
“Great deal”
“As Advertised”
“leaves my hair soft”
“Easy to put on”
“The colors are vibrant”
“Good Material”
“Keeps my hair dry”
What buyers complain about
“Extremely big”
“Disappointing experience and poor quality control”
“Slides off”
“Not as described”
“Broken”
“Material is very thin”
“Not very large or thick as described”
“Elastic is very tight”
“Does not fit tight very comfortable to sleep in”
“I has a strange smell”
Top return reasons
Common questions
- Is hair cap profitable to sell on Amazon United States?
- The niche generates $179K/yr across 33 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is -2.2%. Flapen's verdict: Worth a look (50/100).
- How competitive is the hair cap niche?
- 22 brands and 32 sellers compete. The top 5 products take 43% of clicks and top 5 brands hold 55% of demand.
- What do buyers complain about in hair cap?
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Grip. The return rate is 1.5%.
- When does demand for hair cap peak?
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- What does it cost to enter the hair cap niche?
- Listings span $3.66–$15.16; the average listing price is $9.74 (sweet spot $15–$100). The average incumbent carries 7,598 reviews — the moat a new listing must climb.