Is ctx3 mouth rinse profitable to sell on Amazon United States?

The niche generates $212K/yr across 4 tracked products. 90-day search growth is +10.4%. Flapen's verdict: Skip it (45/100).

How competitive is the ctx3 mouth rinse niche?

1 brands and 2 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in ctx3 mouth rinse?

Top complaints mined from reviews: Cleansing, Value For Money, Thickness. The return rate is 0.3%.

When does demand for ctx3 mouth rinse peak?

Demand peaks in Jan–Aug–Sep–Oct–Nov–Dec; the busiest month runs 3.4× the quietest.

What does it cost to enter the ctx3 mouth rinse niche?

Listings span $15.54–$62.08; the average listing price is $28.19 (sweet spot $15–$100). The average incumbent carries 4,656 reviews — the moat a new listing must climb.

ctx3 mouth rinse

Skip it

A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.3%

return rate — above 5% kills the launch gate

Conversion

Incredible12.1%

search→purchase rate — share of searches ending in a sale

Avg price

Incredible$28.19

avg listing price — sweet spot $15–$100

Price range

Incredible$15.54–$62.08

cheapest to priciest tracked listing — scored on the share inside $15–$100

Market size

Okay$212K

$212K/yr · 62K searches

Growth

Okay+10.4%

90-day search growth — must beat 0% to launch

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Review moat

Bad4,656

avg incumbent reviews — the moat a new listing must climb

Competition

Bad100%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, ctx3 mouth rinse is a $212K/yr Amazon United States market (62K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan–Aug–Sep–Oct–Nov–Dec. Verdict: Skip it — 45/100.

Data updated Jul 14, 2026 · scored weekly · How we score niches

ctx3 mouth rinse market data

Units sold / yr: 10K–13K; avg 2,500–3,000/product
Revenue / yr: $282K–$352K; units × avg price
Conversion rate: 12.1%
Avg BSR: #119
Page quality: 0%
Prime: 75%
Sponsored: 100%
Out of stock: 0.0%
Avg brand age: 90 months
Avg seller age: 163 days

Competition & brand share

The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.

Brands

1 flat

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

100%

Top 20: 100%

Open market

CariFree100%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +10.4% search growth over the last 90 days.

Peak months: Jan, Aug, Sep, Oct, Nov, Dec · busiest ÷ quietest = 3.4×

Open Trend

Top ctx3 mouth rinse search terms

carifree mouthwash37K/yr +13.2%15.7% conv.
carifree treatment rinse10K/yr +4.0%4.5% conv.
carifree maintenance rinse11K/yr +5.2%15.7% conv.
ctx3 mouth rinse2K/yr +31.0%8.7% conv.
carifree rinse2K/yr +1.3%12.1% conv.

All search terms

Top ctx3 mouth rinse 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 4 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

CariFree Maintenance Rinse Mint Flavored Anti-Cavity Fluoride Mouthwash Dentist Recommended Prevents Oral Decay Freshens Breath Alcohol-Free Neutralizes pH (Previously CTx3)

CariFree$17.624.6★6,175 rev

CariFree Maintenance Rinse Citrus Flavored Anti-Cavity Fluoride Mouthwash Dentist Recommended Prevents Oral Decay Freshens Breath Alcohol-Free Neutralizes pH (Previously CTx3)

CariFree$17.534.6★6,175 rev

CariFree Naturals Mouth Rinse Alcohol-Free & Fluoride-Free Mouthwash with Magnolia Bark & Essential Oils Wild Mint Flavor 16 fl oz

CariFree$15.544.4★99 rev

CariFree Maintenance Rinse Mint Flavor Anti-Cavity Fluoride Mouthwash Dentist Recommended Prevents Oral Decay Freshens Breath Alcohol-Free Neutralizes pH (16 Fl Oz (Pack of 4)

CariFree$62.084.6★6,175 rev

Newest

by launch date

CariFree Naturals Mouth Rinse Alcohol-Free & Fluoride-Free Mouthwash with Magnolia Bark & Essential Oils Wild Mint Flavor 16 fl oz

CariFree$15.5499 rev

1y ago

CariFree Maintenance Rinse Mint Flavor Anti-Cavity Fluoride Mouthwash Dentist Recommended Prevents Oral Decay Freshens Breath Alcohol-Free Neutralizes pH (16 Fl Oz (Pack of 4)

CariFree$62.086,175 rev

3y ago

CariFree Maintenance Rinse Mint Flavored Anti-Cavity Fluoride Mouthwash Dentist Recommended Prevents Oral Decay Freshens Breath Alcohol-Free Neutralizes pH (Previously CTx3)

CariFree$17.626,175 rev

10y ago

CariFree Maintenance Rinse Citrus Flavored Anti-Cavity Fluoride Mouthwash Dentist Recommended Prevents Oral Decay Freshens Breath Alcohol-Free Neutralizes pH (Previously CTx3)

CariFree$17.536,175 rev

10y ago

What buyers say about ctx3 mouth rinse

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall25%

“Excellent product”

Cleansing20%

“Feels clean”

Value For Money20%

“Its a large bottle so its a good value for the money”

Tooth Sensitivity5%

“It's gentle, effective, and gives me confidence that I'm doing a little extra to protect my teeth between dental visits”

Tooth Brightening5%

“Has really improved my teeth over the years”

Ingredients-Overall5%

“Proper ingredients”

Toxic/Chemical Free5%

“Clean ingredients without all the chemicals and additives”

Advertised Vs Actual Product5%

“hope it works as advertised”

What buyers complain about

Cleansing25%

“I didn't realize for a while that you're supposed to rinse with this BEFORE you brush”

Value For Money25%

“it's definitely more expensive than other fluoride mouthwashes”

Thickness13%

“is kinda thick”

Material Quality13%

“More plastic”

Top return reasons

Leak-Proof41%

Advertised Vs Actual Product22%

Ingredients-Overall9%

Value For Money6%

Size-Overall4%

Ease Of Use3%

Strength3%

Damage/Burn Hair1%

Natural Ingredients1%

Gap/Hole1%

Common questions

Is ctx3 mouth rinse profitable to sell on Amazon United States?: The niche generates $212K/yr across 4 tracked products. 90-day search growth is +10.4%. Flapen's verdict: Skip it (45/100).
How competitive is the ctx3 mouth rinse niche?: 1 brands and 2 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in ctx3 mouth rinse?: Top complaints mined from reviews: Cleansing, Value For Money, Thickness. The return rate is 0.3%.
When does demand for ctx3 mouth rinse peak?: Demand peaks in Jan–Aug–Sep–Oct–Nov–Dec; the busiest month runs 3.4× the quietest.
What does it cost to enter the ctx3 mouth rinse niche?: Listings span $15.54–$62.08; the average listing price is $28.19 (sweet spot $15–$100). The average incumbent carries 4,656 reviews — the moat a new listing must climb.