Is liquid biotin profitable to sell on Amazon United States?

The niche generates $161K/yr across 26 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is -12.1%. Flapen's verdict: Worth a look (55/100).

How competitive is the liquid biotin niche?

22 brands and 555 sellers compete. The top 5 products take 56% of clicks and top 5 brands hold 58% of demand.

What do buyers complain about in liquid biotin?

Top complaints mined from reviews: Taste-Overall, Value For Money, Vitamin. The return rate is 0.0%.

When does demand for liquid biotin peak?

Demand is steady year-round — the busiest month runs 1.7× the quietest.

What does it cost to enter the liquid biotin niche?

Listings span $7.57–$37.48; the average listing price is $20.68 (sweet spot $15–$100). The average incumbent carries 3,592 reviews — the moat a new listing must climb.

Liquid Biotin

Worth a look

Shows low returns (0.0%), but soft demand (-12.1% this quarter) keeps it on the watch list.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Great$20.68

avg listing price — sweet spot $15–$100

Brand share

Great58%

top-5 brand share — no brand owns this niche

Price range

Great$7.57–$37.48

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

Conversion

Good6.2%

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Competition

Okay56%

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

Market size

Okay$161K

$161K/yr · 126K searches

Review moat

Okay3,592.12

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-12.1%

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

Signals No Dominant Brand

Is liquid biotin profitable on Amazon?

According to Flapen's Amazon United States niche tracking, liquid biotin is a $161K/yr Amazon United States market (126K searches/yr). The top 5 brands hold 58% of demand. Verdict: Worth a look — 55/100.

Data updated Jul 25, 2026 · scored weekly · How we score niches

liquid biotin market size & sales

Units sold, revenue, conversion and listing quality across the tracked shelf.

Units sold / yr: 6K–8K; avg 250–500/product
Revenue / yr: $124K–$165K; units × avg price
Conversion rate: 6.2%
Avg BSR: #911
Page quality: 0%
Prime: 96%
Sponsored: 81%
Out of stock: 2.0%
Avg brand age: 70 months
Avg seller age: 147 days

Competition: brands, sellers & click share

The top 5 products take 56% of clicks — established leaders, but buyers still shop beyond them.

Brands

22 rising

Sellers

555

Top-5 brand share

58%

Top 20: 98%

Top-5 click share

56%

Top 20: 93%

Open market

37%

NUTRAHARMONY19%
PURE RESEARCH17%
Carlyle11%
DR. BO6%
MARYRUTH'S5%
SBR Nutrition5%

liquid biotin demand & seasonality

Weekly Amazon search volume, last 104 weeks — -12.1% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.7×

Open Trend

Top liquid biotin search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

liquid biotin36K/yr -4.2%4.9% conv.
biotin liquid20K/yr -13.5%5.1% conv.
biotin drops17K/yr -0.9%5.8% conv.
liquid biotin and collagen12K/yr -19.3%4.7% conv.
liquid biotin for hair growth13K/yr -38.8%4.2% conv.
biotin liquid drops7K/yr +5.3%7.3% conv.
biotin and collagen drops6K/yr -20.5%4.3% conv.
liquid biotin and collagen for hair growth7K/yr -30.4%3.4% conv.
biotin drops for hair growth women4K/yr -21.4%6.6% conv.
biotin collagen drops3K/yr +11.5%4.8% conv.

All search terms

Top liquid biotin products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

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

Liquid Biotin & Collagen 60 000 mcg - Vitamins for Hair Growth Support - Extra Strength Drops for Women & Men - Liquid Collagen Supplement - Strong Nails & Healthy Skin - Raspberry Flavor 2 Fl Oz

NUTRAHARMONY$23.274.5★3,699 rev

PURE RESEARCH Liquid Biotin & Collagen Hair Growth Drops 60 000mcg Biotin and Liquid Collagen Supplements for Women & Men Supports Glowing Skin Healthy Hair & Nail Growth (2Fl Oz)

PURE RESEARCH$20.514.4★27,452 rev

Carlyle Liquid Biotin 10000mcg | 2 oz | Extra Strength Drops

Carlyle$7.574.3★3,076 rev

Liquid Biotin and Collagen Drops - Liquid Collagen Biotin for Hair Growth Women & Men Peptides Vitamin Supplements Drink - Extra Strength Vitamins Skin Nails Hair Growth Drops for Women & Men 2oz

DR. BO$10.004.2★51 rev

Liquid Biotin & Collagen Keratin Hyaluronic Acid Saw Palmetto Drops Vitamins for Hair Growth Support Silica Vitamin A C D Bamboo Turmeric Zinc Folate Magnesium Horsetail LuxFlo By Clean Nutra

Clean Nutraceuticals$23.184.5★668 rev

Newest

by launch date

Liquid Biotin and Collagen Drops - Liquid Collagen Biotin for Hair Growth Women & Men Peptides Vitamin Supplements Drink - Extra Strength Vitamins Skin Nails Hair Growth Drops for Women & Men 2oz

DR. BO$10.0051 rev

3mo ago

Pure Biotin 10000mcg Liquid Drop Hair Skin & Nails Vitamins Support

JUIWEFKK$9.8426 rev

4mo ago

Zena Nutrition Premium Liquid Collagen for Women Healthier Your Skin Hair & Nail Verisol Collagen Liquid Biotin and Collagen Supplements for Women - 10oz

Zena Nutrition$20.094,124 rev

5mo ago

Liquid Biotin & Collagen Drops with Aloe Vera Unique Formula 60 000 mcg - Vitamins for Hair Growth support Strong Nails & Radiant Skin Liquid Collagen Supplement for Women & Men 2 fl oz

4Ever Beauty$17.7826 rev

1y ago

Liquid Biotin & Collagen Drops - Biotin 20 000mcg - Hair Growth Vitamin Support - Biotin and Liquid Collagen Supplement for Women & Men - Glowing Skin Support Healthy Hair & Nail Growth - 2 Fl Oz

GPGP GreenPeople$21.05195 rev

1y ago

What reviews say buyers love and hate about liquid biotin

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

What buyers love

Taste-Overall26%

“It tastes amazing”

Hair Growth15%

“Crazy hair growth”

Quality-Overall9%

“quality product that is easy to use every day”

Vitamin9%

“Great vitamin supplement”

Flavor5%

“Silky smooth and decent flavor”

Ease Of Use4%

“Easy peasy”

Value For Money3%

“Worth every penny”

Skin Health2%

“and healthier skin”

Efficiency2%

“But I think Its effective”

Energy Level2%

“Gives me a boost of energy”

What buyers complain about

Taste-Overall22%

“Taste was nasty”

Value For Money7%

“Quite expensive”

Vitamin4%

“I would not recommend this vitamin”

Side Effects4%

“explosive, painful diarrhea from this and I literally never get headaches”

Functionality-Overall3%

“ZERO RESULTS AFTER MONTHS”

Dosage3%

“the biotin dosage is way too high”

Leak-Proof3%

“Leaked”

Flavor2%

“It tastes like light berry, slightly artificial”

Smell2%

“smell are chemicals”

Thickness2%

“The consistency is extremely thick”

Top return reasons

Leak-Proof29%

Functionality-Overall11%

Acid Regulator/Stomach Ache Relief11%

Taste-Overall11%

Value For Money11%

Joint Pain7%

Contamination4%