smoothing serum
Launch itA $2.2M/yr market growing +6.0% this quarter with returns at 0.9% — clears our launch bar.
Market size
Incredible$2.2M$2.2M/yr · 2.0M searches
Returns
Incredible0.9%return rate — above 5% kills the launch gate
Avg price
Great$19.86avg listing price — sweet spot $15–$100
Price range
Great$8.59–$39.45cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good5.5%search→purchase rate — share of searches ending in a sale
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Competition
Good53%top-5 click share — leaders hold, buyers still browse
Growth
Okay+6.0%90-day search growth — must beat 0% to launch
Review moat
Bad11,959.43avg incumbent reviews — the moat a new listing must climb
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, smoothing serum is a $2.2M/yr Amazon United States market (2.0M searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jun. Verdict: Launch it — 58/100.
Data updated Jul 14, 2026 · scored weekly · How we score niches
smoothing serum market data
- Units sold / yr
- 125K–150K
- avg 4,000–5,000/product
- Revenue / yr
- $2.5M–$3.0M
- units × avg price
- Conversion rate
- 5.5%
- Avg BSR
- #110
- Page quality
- 0%
- Prime
- 97%
- Sponsored
- 77%
- Out of stock
- 0.0%
- Avg brand age
- 55 months
- Avg seller age
- 130 days
Competition & brand share
The top 5 products take 53% of clicks — established leaders, but buyers still shop beyond them.Brands
4 flat
Sellers
35
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
53%
Top 20: 88%
Open market
0%
- COLOR WOW33%
- MAREE32%
- Paul Mitchell32%
- John Frieda4%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +6.0% search growth over the last 90 days.Peak months: Jun · busiest ÷ quietest = 2.6×
Top smoothing serum search terms
- maree629K/yr
- paul mitchell super skinny serum359K/yr
- wow dream coat for curly hair wow211K/yr
- mare188K/yr
- maree keratin hair treatment229K/yr
- frizz ease serum71K/yr
- wow curly hair products71K/yr
- super skinny serum35K/yr
- color wow curly hair products30K/yr
- paul mitchell serum24K/yr
Top smoothing 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
COLOR WOW Dream Coat for Curly Hair Moisture-Boosting Anti-Frizz Spray for Defined Curls
COLOR WOW$22.614.1★20,381 rev
Paul Mitchell Super Skinny Serum Blowout Primer Speeds Up Drying Time Humidity Resistant For All Hair Types 5.1 fl. oz
Paul Mitchell$27.224.7★17,599 rev
Paul Mitchell Super Skinny Serum Blowout Primer Speeds Up Drying Time Humidity Resistant For All Hair Types 8.5 fl oz
Paul Mitchell$37.234.7★17,599 rev
COLOR WOW Dream Coat for Curly Hair 2.5 fl oz Frizz-Free Curls Made Easy Moisture-Boosting Spray Curl-Enhancing Formula
COLOR WOW$12.754.1★20,381 rev
MAREE Deep Conditioning Hair Mask for Damaged Hair Treatment Keratin Hair Care for Hydrating Growth Repair Moisturizing Dry Curly Color Refreshing 10 Fl Oz White
MAREE$21.244.4★10,828 rev
Newest
by launch date
John Frieda Frizz Ease Extra Strength Hair Serum for Thick & Coarse Hair Anti-Frizz Smoothing Serum with Argan & Coconut Oil 1.69 fl oz
John Frieda$9.9219,708 rev
MAREE Leave-In Conditioner Hair Gloss for Dry Damaged Hair Leave-In Conditioner for Curly Hair Color Treated
MAREE$11.461,337 rev
MAREE Hair Oil for Frizzy Hair with Argan Oil Keratin & Biotin Hair Serum for Dry and Curly Hair Gloss Frizz Control Hair Care Products for Women Aceite Para el Cabello Keratin Hair Treatment
MAREE$11.222,496 rev
MAREE Toner Glycolic Acid Exfoliating Toner for Face Acido Glicolico para Manchas
MAREE$8.591,025 rev
Paul Mitchell Clear Smoothing Serum Blowout Primer Fragrance Free For Sensitive Scalp + Skin 0.85 fl oz
Paul Mitchell$11.56221 rev
Trending
90-day click momentum
Paul Mitchell Super Skinny Serum Speeds Up Drying Time Humidity Resistant For Frizzy Hair
Paul Mitchell$12.694.4★
John Frieda Frizz Ease Extra Strength Hair Serum for Thick & Coarse Hair Anti-Frizz Smoothing Serum with Argan & Coconut Oil 1.69 fl oz
John Frieda$9.924.4★
Paul Mitchell Super Skinny Serum Blowout Primer Speeds Up Drying Time Humidity Resistant For All Hair Types 8.5 fl oz
Paul Mitchell$37.234.7★
Paul Mitchell Clear Smoothing Serum Blowout Primer Fragrance Free For Sensitive Scalp + Skin 0.85 fl oz
Paul Mitchell$11.564.4★
MAREE Toner Glycolic Acid Exfoliating Toner for Face Acido Glicolico para Manchas
MAREE$8.594.4★
What buyers say about smoothing serum
What buyers praise and complain about, mined from review topics.What buyers love
“Goes on smoothly”
“Excellent Product”
“fragrance free”
“Good moisturizer”
“This works great on my curly hair”
“Good for the price”
“Nice curls”
“it made my hair very soft”
“It makes my hair look and feel amazing”
“Effective”
What buyers complain about
“Did not work as says”
“Expensive”
“Not Fragrance Free”
“makes my hair hard”
“Doesn't moisturize”
“Did not work on my curly hair”
“hard to control”
“Fake advertising”
“Super greasy”
“Not sure about how long it takes to see improvement”
Top return reasons
Common questions
- Is smoothing serum profitable to sell on Amazon United States?
- The niche generates $2.2M/yr across 30 tracked products. 5 of 5 products launched in the last 360 days are still selling. 90-day search growth is +6.0%. Flapen's verdict: Launch it (58/100).
- How competitive is the smoothing serum niche?
- 4 brands and 35 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in smoothing serum?
- Top complaints mined from reviews: Functionality-Overall, Value For Money, Smell. The return rate is 0.9%.
- When does demand for smoothing serum peak?
- Demand peaks in Jun; the busiest month runs 2.6× the quietest.
- What does it cost to enter the smoothing serum niche?
- Listings span $8.59–$39.45; the average listing price is $19.86 (sweet spot $15–$100). The average incumbent carries 11,959 reviews — the moat a new listing must climb.