Is bath bomb kit profitable to sell on Amazon United States?

The niche generates $141K/yr across 26 tracked products. 1 of 6 products launched in the last 360 days are still selling. 90-day search growth is -26.8%. Flapen's verdict: Worth a look (56/100).

How competitive is the bath bomb kit niche?

18 brands and 51 sellers compete. The top 5 products take 47% of clicks and top 5 brands hold 65% of demand.

What do buyers complain about in bath bomb kit?

Top complaints mined from reviews: Color, Stain Resistance, Durability. The return rate is 1.0%.

When does demand for bath bomb kit peak?

Demand peaks in Nov–Dec; the busiest month runs 4.8× the quietest.

What does it cost to enter the bath bomb kit niche?

Listings span $13.02–$28.51; the average listing price is $19.62 (sweet spot $15–$100). The average incumbent carries 1,334 reviews — the moat a new listing must climb.

bath bomb kit

Worth a look

Shows low returns (1.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Incredible1.0%

return rate — above 5% kills the launch gate

Avg price

Great$19.62

avg listing price — sweet spot $15–$100

Quality gap

Great4.1★

avg incumbent rating — lower means beatable quality

Price range

Great$13.02–$28.51

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

Brand share

Good65%

top-5 brand share — brands hold most of the demand

Competition

Good47%

top-5 click share — leaders hold, buyers still browse

Review moat

Good1,333.65

avg incumbent reviews — the moat a new listing must climb

Conversion

Okay3.3%

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

Market size

Okay$141K

$141K/yr · 219K searches

Growth

Bad-26.8%

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

According to Flapen's Amazon United States niche tracking, bath bomb kit is a $141K/yr Amazon United States market (219K searches/yr). The top 5 brands hold 65% of demand. Demand peaks in Nov–Dec. Verdict: Worth a look — 56/100.

Data updated Jul 15, 2026 · scored weekly · How we score niches

bath bomb kit market data

Units sold / yr: 10K–13K; avg 250–500/product
Revenue / yr: $196K–$245K; units × avg price
Conversion rate: 3.3%
Avg BSR: #564
Page quality: 0%
Prime: 100%
Sponsored: 92%
Out of stock: 5.9%
Avg brand age: 39 months
Avg seller age: 177 days

Competition & brand share

The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them.

Brands

18 rising

Sellers

Top-5 brand share

65%

Top 20: 100%

Top-5 click share

47%

Top 20: 94%

Open market

29%

Dan&Darci21%
STMT14%
JUYRLE13%
Klutz11%
DecorRom7%
Tub Works6%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -26.8% search growth over the last 90 days.

Peak months: Nov, Dec · busiest ÷ quietest = 4.8×

Open Trend

Top bath bomb kit search terms

bath bomb kit61K/yr -17.7%3.2% conv.
bath bomb making kit44K/yr -23.4%2.9% conv.
bath bomb making kit for kids17K/yr -23.2%5.5% conv.
bath bomb kit for kids17K/yr -54.9%4.1% conv.
diy bath bomb kit12K/yr -28.5%3.5% conv.
make your own bath bombs for kids11K/yr -46.3%4.9% conv.
bath bomb kits for kids age 8-125K/yr -4.3%4.9% conv.
diy bath bomb kit for kids7K/yr -7.8%6.0% conv.
bath bomb kits7K/yr -31.9%2.2% conv.
bath bomb maker7K/yr -25.7%1.9% conv.

All search terms

Top bath bomb kit 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 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

STMT D.I.Y. Bath Bomb Kit STMT Kits for Girls Bath Bomb Mold Spa Kit for Kids Bath Crumbles Ages - 6+ 1 Count (Pack of 1) Green

STMT$16.484.3★1,813 rev

Dan&Darci Soap & Bath Bomb Making Kit for Kids 3-in-1 Spa Science Kits Craft Gifts for Girls & Boys Age 6-12 Year Old Girl Crafts: DIY Experiment Toys Gift for Kid Ages

Dan&Darci$28.514.4★4,841 rev

Dan&Darci Bath Bomb Making Kit for Kids - Kid Crafts Science Project - Gifts for Girls and Boys - Craft Activity Gift for Age 6 7 8 9 10 11 & 12 Year Old Girl - Makes 10 Baths Bombs Fizzies

Dan&Darci$15.144.0★1,759 rev

Make Your Own Bath Bombs

Klutz$18.034.3★4,079 rev

JUYRLE Bath Bomb Making Kit- 49Pcs DIY Bath Bomb Kit for Aldult Make Your Own Shower Bombs Spa Craft Kits with Bath Bomb Press Molds Bath & Bathing Making Supplies Gifts for Mom Women

JUYRLE$22.964.0★57 rev

Newest

by launch date

Bath Bombs Science Lab - Create 10 Baths Bombs Bath Toys for Kids - Great Gifts for Girls Age 8-12 Crafts Kit for Girls Spa Kit for Girl

Piano Potato$20.872 rev

2mo ago

ZQBQC Bath Bomb Making Kit- DIY Bath Bomb Kit for Kids Adults Make Your Own Spa Set Shower Craft Kits with Bath Bomb Molds Soap Making Kits Bath Bomb Making Supplies Gifts for Girls Women

ZQBQC$20.272 rev

3mo ago

DINGTU Bath Bomb Making Kit DIY Bath Bomb Kit for Adults & Teens Make Your Own Bath Fizzy with Bath Bomb Molds Essential Oils Relaxing Bath Time Home Creative Spa Gift for Her Women

DINGTU$19.935 rev

4mo ago

THALUNA Bath Bomb Making Kit DIY Bath Bomb Kit for Adults & Teens Make Your Own Bath Fizzy with Bath Bomb Molds Essential Oils Relaxing Bath Time Home Creative Spa Gift for Her Women

Thaluna$21.8412 rev

7mo ago

TSVATE Bath Bomb Making Kit-DIY Bath Bomb Kit for Women Make Your Own Shower Bombs with Bath Bomb Press Spa Craft Kits Christmas Bath & Bathing Making Supplies Gifts for Women Girls Kids

TSVATE$19.5810 rev

9mo ago

What buyers say about bath bomb kit

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

What buyers love

Color22%

“Very bright colors”

Gifting Purpose10%

“Fun gift”

Quality-Overall8%

“Decent kit”

Ease Of Use6%

“Easy to use”

Smell6%

“I picked the lavender scent to start with as it's one of my favorites to relax with”

Durability6%

“This kit lasted them a whileeeee”

Value For Money5%

“Worth the money”

Ease Of Cleaning4%

“clean up is easy”

Fun/Entertainment Experience4%

“Fun project for granddaughter”

Instructions/User Manual/Troubleshooting4%

“The instructions were clear and concise,”

What buyers complain about

Color10%

“The colors are dull”

Stain Resistance10%

“It does stain easily”

Durability8%

“Broke after a few uses”

Quality-Overall7%

“Terrible product”

Instructions/User Manual/Troubleshooting6%

“No instruction book”

Smell6%

“they are scented”

Value For Money5%

“Wasted money”

Functionality-Overall5%

“Doesn't work”

Allergies3%

“Skin itchy”

Advertised Vs Actual Product3%

“Didnt do what it said”

Top return reasons

Leak-Proof19%

Defective Material/Parts15%

Advertised Vs Actual Product10%

Functionality-Overall7%

Stain Resistance6%

Color6%

Value For Money3%

Product Condition3%

Size-Overall3%

Durability3%

Common questions

Is bath bomb kit profitable to sell on Amazon United States?: The niche generates $141K/yr across 26 tracked products. 1 of 6 products launched in the last 360 days are still selling. 90-day search growth is -26.8%. Flapen's verdict: Worth a look (56/100).
How competitive is the bath bomb kit niche?: 18 brands and 51 sellers compete. The top 5 products take 47% of clicks and top 5 brands hold 65% of demand.
What do buyers complain about in bath bomb kit?: Top complaints mined from reviews: Color, Stain Resistance, Durability. The return rate is 1.0%.
When does demand for bath bomb kit peak?: Demand peaks in Nov–Dec; the busiest month runs 4.8× the quietest.
What does it cost to enter the bath bomb kit niche?: Listings span $13.02–$28.51; the average listing price is $19.62 (sweet spot $15–$100). The average incumbent carries 1,334 reviews — the moat a new listing must climb.