Is kilgour md hair serum bundle profitable to sell on Amazon United States?

The niche generates $1.3M/yr across 6 tracked products. 90-day search growth is -40.8%. Flapen's verdict: Worth a look (50/100).

How competitive is the kilgour md hair serum bundle niche?

3 brands and 5 sellers compete. The top 5 products take 97% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in kilgour md hair serum bundle?

Top complaints mined from reviews: Value For Money, Functionality-Overall, Side Effects. The return rate is 0.9%.

What does it cost to enter the kilgour md hair serum bundle niche?

Listings span $22.56–$84.85; the average listing price is $53.22 (sweet spot $15–$100). The average incumbent carries 4,202 reviews — the moat a new listing must climb.

kilgour md hair serum bundle

Worth a look

Shows low returns (0.9%), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.

Returns

Incredible0.9%

return rate — above 5% kills the launch gate

Price range

Incredible$22.56–$84.85

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

Avg price

Great$53.22

avg listing price — sweet spot $15–$100

Quality gap

Great4.1★

avg incumbent rating — lower means beatable quality

Market size

Great$1.3M

$1.3M/yr · 302K searches

Conversion

Great8.2%

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

Review moat

Bad4,201.67

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-40.8%

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

Competition

Bad97%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

Signals High Price

According to Flapen's Amazon United States niche tracking, kilgour md hair serum bundle is a $1.3M/yr Amazon United States market (302K searches/yr). The top 5 brands hold 100% of demand. Verdict: Worth a look — 50/100.

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

kilgour md hair serum bundle market data

Units sold / yr: 25K–30K; avg 2,500–3,000/product
Revenue / yr: $1.3M–$1.6M; units × avg price
Conversion rate: 8.2%
Avg BSR: #29
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 6.2%
Avg brand age: 43 months
Avg seller age: 134 days

Competition & brand share

The top 5 products capture 97% of clicks — a locked-up shelf that new listings rarely crack.

Brands

3 flat

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

97%

Top 20: 100%

Open market

Nutrafol71%
OUAI26%
The Ordinary3%

Demand

Weekly Amazon search volume, last 44 weeks — -40.8% search growth over the last 90 days.

Open Trend

Top kilgour md hair serum bundle search terms

nutrafol hair serum63K/yr -29.1%9.6% conv.
nutrafol serum37K/yr -25.4%10.9% conv.
ouai scalp serum48K/yr -38.1%8.0% conv.
nutrafol women hair growth serum15K/yr -22.0%8.3% conv.
nutrafol hair serum for women15K/yr -29.0%8.5% conv.
le jardin switzerland hair serum32K/yr -84.3%0.3% conv.
nutrafol serum for women13K/yr -24.9%10.1% conv.
nutrafol women hair growth8K/yr +5.1%3.1% conv.
ouai hair serum10K/yr -37.6%6.0% conv.
champo hair serum12K/yr -31.1%0.4% conv.

All search terms

Top kilgour md hair serum bundle 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 6 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Nutrafol Womens Hair Serum Supports Visibly Thicker and Stronger Hair Vegan Lightweight and Fast-Absorbing - 1 Fl Oz 1 Bottle

Nutrafol$47.264.1★3,392 rev

OUAI Scalp Serum - Balancing Hair Serum with Red Clover Extract Siberian Ginseng and Peptides for Thicker and Fuller-Looking Hair - Paraben Phthalate and Sulfate Free Scalp Care (2 Fl Oz)

OUAI$51.304.3★901 rev

Nutrafol Women Hair Serum for Thinning Hair Clinically Tested to Support Visibly Thicker Stronger-Feeling Hair Vegan Lightweight and Fast-Absorbing 1.7 fl oz 1 Bottle

Nutrafol$65.894.1★3,392 rev

Nutrafol Mens Hair Serum Clinically Tested to Support Visibly Thicker Hair and Scalp Coverage Lightweight and Non-Greasy for Daily Use - 30mL 1 Bottle

Nutrafol$47.434.0★261 rev

Nutrafol Womens Balance Hair Growth Supplements Ages 45 and Up Clinically Tested for Visibly Thicker Hair and Scalp Coverage Dermatologist Recommended - 1 Month Supply

Nutrafol$84.854.2★15,776 rev

Newest

by launch date

Nutrafol Mens Hair Serum Clinically Tested to Support Visibly Thicker Hair and Scalp Coverage Lightweight and Non-Greasy for Daily Use - 30mL 1 Bottle

Nutrafol$47.43261 rev

2y ago

Nutrafol Womens Hair Serum Supports Visibly Thicker and Stronger Hair Vegan Lightweight and Fast-Absorbing - 1 Fl Oz 1 Bottle

Nutrafol$47.263,392 rev

2y ago

OUAI Scalp Serum - Balancing Hair Serum with Red Clover Extract Siberian Ginseng and Peptides for Thicker and Fuller-Looking Hair - Paraben Phthalate and Sulfate Free Scalp Care (2 Fl Oz)

OUAI$51.30901 rev

4y ago

The Ordinary Multi-Peptide Serum for Hair Density Peptide-Powered Formula for Thicker Fuller Looking Hair 2 Fl Oz

The Ordinary$22.561,488 rev

4y ago

Nutrafol Women Hair Serum for Thinning Hair Clinically Tested to Support Visibly Thicker Stronger-Feeling Hair Vegan Lightweight and Fast-Absorbing 1.7 fl oz 1 Bottle

Nutrafol$65.893,392 rev

5y ago

What buyers say about kilgour md hair serum bundle

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

What buyers love

Hair Growth36%

“That the product truly delivers serious hair growth”

Quality-Overall18%

“it has pretty great reviews”

Value For Money8%

“Worth the money”

Smell4%

“Smells nice and easy to apply, doesn't leave oily residue”

Thickness3%

“I get a lot of compliments in how much thicker my hair is”

Ease Of Use2%

“Its easy to use”

Advertised Vs Actual Product2%

“It all works as it should”

Symptom Reduction2%

“have seen significant results”

Suitability Straight Hair2%

“Highly recommend for anyone looking to support healthier, fuller-looking hair”

Side Effects1%

“I have now been using this product for just over a year and have seen significant results”

What buyers complain about

Value For Money22%

“Expensive”

Functionality-Overall14%

“No result at all”

Side Effects10%

“started feeling bad”

Hair Related9%

“My hair was falling out by handfuls for months”

Allergies5%

“it so so so itchy it bothered me all day”

Oily/Greasy4%

“A bit oily”

Smell4%

“it has a very pungent odor”

Symptom Reduction3%

“No Positive Results Yet”

Size-Overall3%

“small”

Thickness2%

“thicker hair”

Top return reasons

Functionality-Overall18%

Value For Money12%

Advertised Vs Actual Product11%

Oily/Greasy8%

Smell7%

Side Effects6%

Product Condition5%

Damage/Burn Hair5%

Defective Material/Parts4%

Size-Overall4%

Common questions

Is kilgour md hair serum bundle profitable to sell on Amazon United States?: The niche generates $1.3M/yr across 6 tracked products. 90-day search growth is -40.8%. Flapen's verdict: Worth a look (50/100).
How competitive is the kilgour md hair serum bundle niche?: 3 brands and 5 sellers compete. The top 5 products take 97% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in kilgour md hair serum bundle?: Top complaints mined from reviews: Value For Money, Functionality-Overall, Side Effects. The return rate is 0.9%.
What does it cost to enter the kilgour md hair serum bundle niche?: Listings span $22.56–$84.85; the average listing price is $53.22 (sweet spot $15–$100). The average incumbent carries 4,202 reviews — the moat a new listing must climb.