one size primer
Skip itA small market ($49K/yr) — this niche doesn't clear our bar today.
Quality gap
Incredible3.9★avg incumbent rating — lower means beatable quality
Returns
Incredible0.7%return rate — above 5% kills the launch gate
Avg price
Incredible$25.67avg listing price — sweet spot $15–$100
Price range
Great$8.09–$62.94cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Good+33.1%90-day search growth — must beat 0% to launch
Review moat
Bad4,482.85avg incumbent reviews — the moat a new listing must climb
Conversion
Bad1.9%search→purchase rate — share of searches ending in a sale
Competition
Bad75%top-5 click share — a locked-up shelf
Brand share
Bad92%top-5 brand share — brand-locked demand
Market size
Bad$49K$49K/yr · 102K searches
According to Flapen's Amazon United States niche tracking, one size primer is a $49K/yr Amazon United States market (102K searches/yr). The top 5 brands hold 92% of demand. Demand peaks in Jan–Feb–Apr. Verdict: Skip it — 48/100.
Data updated Jul 15, 2026 · scored weekly · How we score niches
one size primer market data
- Units sold / yr
- 3K–3K
- avg 100–250/product
- Revenue / yr
- $64K–$77K
- units × avg price
- Conversion rate
- 1.9%
- Avg BSR
- #388
- Page quality
- 0%
- Prime
- 54%
- Sponsored
- 69%
- Out of stock
- 4.0%
- Avg brand age
- 63 months
- Avg seller age
- 136 days
Competition & brand share
The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.Brands
8 rising
Sellers
63
Top-5 brand share
92%
Top 20: 100%
Top-5 click share
75%
Top 20: 100%
Open market
5%
- Generic74%
- One size6%
- IFSLQNX5%
- Smashbox3%
- NYX PROFESSIONAL MAKEUP3%
- e.l.f.3%
- Open — no brand owns it (2 brands, 5%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +33.1% search growth over the last 90 days.Peak months: Jan, Feb, Apr · busiest ÷ quietest = 3.0×
Top one size primer search terms
- one size primer76K/yr
- one size secure the sweat primer7K/yr
- secure the sweat primer7K/yr
- onesize primer4K/yr
- primer one size4K/yr
- one size sweat proof primer3K/yr
Top one size primer 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 13 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
O/S by P-Starr - Secure The Sweat Waterproof Mattifying Primer waterproof Up to 12 hours of oil resistance - Size:(Mini) (0.33 oz / 10 mL)
Generic$32.273.2★32 rev
O/S by P-Starr - Secure The Sweat Waterproof Mattifying Primer waterproof Up to 12 hours of oil resistance - Size: (0.33 oz / 10 mL) (Mini)
Generic$32.853.6★4 rev
Long-Lasting Matte Oil Control Primer for Oily Skin Long-Lasting Waterproof Pore-Minimizing Makeup Base Shine Control Face Primer 1 fl oz (30ml)
Generic$16.783.2★4 rev
Secure The Sweat Waterproof Mattifying Primer Travel
Generic$29.383.9★34 rev
One Size Secure The Blur Makeup Magnet Primer 35ml / 1.2fl.oz.
One size$34.014.6★214 rev
Newest
by launch dateLong-Lasting Matte Oil Control Primer for Oily Skin Long-Lasting Waterproof Pore-Minimizing Makeup Base Shine Control Face Primer 1 fl oz (30ml)
Generic$16.784 rev
O/S by P-Starr - Secure the Blur Makeup Magnet Primer Pore-Blurring Shine Control Long-Lasting Flawless Finish Lightweight Primer for All Skin Types - Size: (1.18 oz / 35 mL)
Generic$62.940 rev
ONE/SIZE by Patrick Starrr Secure The Blur Makeup Magnet Primer 1.2 fl oz Pore Blurring Mattifying All-Day Wear
Generic$59.981 rev
O/S by P-Starr - Secure The Sweat Waterproof Mattifying Primer waterproof Up to 12 hours of oil resistance - Size:(Mini) (0.33 oz / 10 mL)
Generic$32.2732 rev
O/S by P-Starr - Secure The Sweat Waterproof Mattifying Primer waterproof Up to 12 hours of oil resistance - Size: (0.33 oz / 10 mL) (Mini)
Generic$32.854 rev
Trending
90-day click momentumLong-Lasting Matte Oil Control Primer for Oily Skin Long-Lasting Waterproof Pore-Minimizing Makeup Base Shine Control Face Primer 1 fl oz (30ml)
Generic$16.783.2★
O/S by P-Starr - Secure The Sweat Waterproof Mattifying Primer waterproof Up to 12 hours of oil resistance - Size: (0.33 oz / 10 mL) (Mini)
Generic$32.853.6★
Oil Sucker Extreme Mattifying Alkaline Primer oil sucker primer makeup Mattifying for Oily Skin Waterproof Mattifying for All Skin Types (1pcs)
IFSLQNX$8.873.9★
O/S by P-Starr - Secure The Sweat Waterproof Mattifying Primer waterproof Up to 12 hours of oil resistance - Size:(Mini) (0.33 oz / 10 mL)
Generic$32.273.2★
ONE/SIZE by Patrick Starrr Secure The Blur Makeup Magnet Primer 1.2 fl oz Pore Blurring Mattifying All-Day Wear
Generic$59.981.0★
What buyers say about one size primer
What buyers praise and complain about, mined from review topics.What buyers love
“This is a great, affordable product”
“Great for the price”
“It smooths the skin”
“It is smooth”
“It adheres well”
“it stays on all day”
“Keeps me hydrated”
“Great product for oily skin”
“This primer lightweight”
“Does what it says”
What buyers complain about
“did the test run it didnt stick”
“This is a tiny bottle”
“not worth the price”
“Not really grippy”
“Doesn't work”
“cling to any dry spots”
“absolute trash”
“Seemed to make it worse”
“I dont like the feeling after applying it”
“Worst primer for combination skin”
Top return reasons
Common questions
- Is one size primer profitable to sell on Amazon United States?
- The niche generates $49K/yr across 13 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is +33.1%. Flapen's verdict: Skip it (48/100).
- How competitive is the one size primer niche?
- 8 brands and 63 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 92% of demand.
- What do buyers complain about in one size primer?
- Top complaints mined from reviews: Adhesion/Stickiness, Size-Overall, Value For Money. The return rate is 0.7%.
- When does demand for one size primer peak?
- Demand peaks in Jan–Feb–Apr; the busiest month runs 3.0× the quietest.
- What does it cost to enter the one size primer niche?
- Listings span $8.09–$62.94; the average listing price is $25.67 (sweet spot $15–$100). The average incumbent carries 4,483 reviews — the moat a new listing must climb.