biotin with keratin
Skip itSoft demand (-18.8% this quarter) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Conversion
Great10.6%search→purchase rate — share of searches ending in a sale
Avg price
Great$19.10avg listing price — sweet spot $15–$100
Price range
Great$8.00–$49.31cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Good74%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Competition
Okay70%top-5 click share — leaders hold, buyers still browse
Market size
Bad$97K$97K/yr · 48K searches
Review moat
Bad12,478.8avg incumbent reviews — the moat a new listing must climb
Growth
Bad-18.8%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, biotin with keratin is a $97K/yr Amazon United States market (48K searches/yr). The top 5 brands hold 74% of demand. Demand peaks in Oct. Verdict: Skip it — 46/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
biotin with keratin market data
- Units sold / yr
- 4K–5K
- avg 250–500/product
- Revenue / yr
- $76K–$96K
- units × avg price
- Conversion rate
- 10.6%
- Avg BSR
- #371
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 80%
- Out of stock
- 0.0%
- Avg brand age
- 66 months
- Avg seller age
- 150 days
Competition & brand share
The top 5 products take 70% of clicks — established leaders, but buyers still shop beyond them.Brands
13 falling
Sellers
550
Top-5 brand share
74%
Top 20: 100%
Top-5 click share
70%
Top 20: 100%
Open market
21%
- Carlyle32%
- NUTRAHARMONY18%
- Walgreens10%
- VITBOOST8%
- Nature's Truth6%
- NeoCell5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -18.8% search growth over the last 90 days.Peak months: Oct · busiest ÷ quietest = 1.7×
Top biotin with keratin search terms
- biotin and keratin supplements14K/yr
- biotin keratin8K/yr
- biotin with keratin9K/yr
- biotin and keratin6K/yr
- biotin keratin supplement7K/yr
- biotin plus keratin4K/yr
Top biotin with keratin 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 15 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Carlyle Biotin 10000mcg | 150 Capsules | Beauty Formula with Keratin
Carlyle$9.954.6★875 rev
Biotin | Collagen | Hyaluronic Acid | Keratin - Hair Growth & Strength Support Vitamins - Skin & Nails Supplement - Clinically Tested for Men & Women - 25000mcg Vitamins B1 B2 B3 B6 & B7 - 60 Caps
NUTRAHARMONY$26.494.5★18,756 rev
Walgreens Biotin + Keratin | 150 Count Tablets | 10mg of Biotin + 100mg of Keratin | Hair Skin and Nail Support Supplement
Walgreens$17.864.7★53 rev
VITBOOST Biotin with Hyaluronic Acid Collagen and Keratin 25000 mcg Hair Growth Vitamins for Men and Women Nails and Skin USA Made - Third Party Tested B1 B2 B3 B6 B7 Complex - 60 Capsules
VITBOOST$18.834.6★3,676 rev
Natures Truth Beauty Complex | 5000 mcg of Biotin | 50 Capsules
Nature's Truth$9.034.6★361 rev
Newest
by launch date
StrongVit Biotin with Hyaluronic Acid Keratin and Collagen Supplements - 10000mcg for Hair Growth Women and Men - Hair Skin and Nails Vitamins - 60 Capsules
StrongVit$12.64390 rev
NeoCell Biotin Complex Hair Skin & Nails | 90 Capsules
NeoCell$9.96108 rev
Vitboost Biotin with Hyaluronic Acid Collagen and Keratin 25000 mcg Hair Growth Vitamins for Men and Women Nails and Skin USA Made - Third Party Tested B1 B2 B3 B6 B7 Complex - 120 Capsules
VITBOOST$33.863,676 rev
Biotin | Collagen | Hyaluronic Acid | Keratin - Support Normal Hair Growth Cycle Skin & Nails - Clinically Tested - 25000mcg Vitamins B1 B2 B3 B6 & B7 - for Women & Men - 120 Capsules
NUTRAHARMONY$49.3118,756 rev
Walgreens Biotin + Keratin | 150 Count Tablets | 10mg of Biotin + 100mg of Keratin | Hair Skin and Nail Support Supplement
Walgreens$17.8653 rev
Trending
90-day click momentumVitboost Biotin with Hyaluronic Acid Collagen and Keratin 25000 mcg Hair Growth Vitamins for Men and Women Nails and Skin USA Made - Third Party Tested B1 B2 B3 B6 B7 Complex - 120 Capsules
VITBOOST$33.864.6★
Biotin | Collagen | Hyaluronic Acid | Keratin - Support Normal Hair Growth Cycle Skin & Nails - Clinically Tested - 25000mcg Vitamins B1 B2 B3 B6 & B7 - for Women & Men - 120 Capsules
NUTRAHARMONY$49.314.5★
StrongVit Biotin with Hyaluronic Acid Keratin and Collagen Supplements - 10000mcg for Hair Growth Women and Men - Hair Skin and Nails Vitamins - 60 Capsules
StrongVit$12.644.6★
OLLY Ultra Strength Hair Softgels Supports Hair Health Biotin Keratin Vitamin D B12 Hair Supplement 30 Day Supply - 30 Count (Packaging May Vary)
OLLY$17.784.3★
VITBOOST Biotin with Hyaluronic Acid Collagen and Keratin 25000 mcg Hair Growth Vitamins for Men and Women Nails and Skin USA Made - Third Party Tested B1 B2 B3 B6 B7 Complex - 60 Capsules
VITBOOST$18.834.6★
What buyers say about biotin with keratin
What buyers praise and complain about, mined from review topics.What buyers love
“Noticeable hair growth”
“Excellent product”
“Great vitamin for fine health”
“Great value”
“Effective”
“Great taste, chewables”
“As Advertised”
“Skin looks and feels smoother”
“Easy to use”
“Powerful”
What buyers complain about
“No results”
“After doing some research the dosage in these is insanely high”
“I ruined my hair”
“not worth it”
“Allergic”
“no new visible hair growth at all”
“Horrible after taste”
“not worth the side effects I experienced”
“yeah theres a little strong smell”
“The capsule is too big”
Top return reasons
Common questions
- Is biotin with keratin profitable to sell on Amazon United States?
- The niche generates $97K/yr across 15 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -18.8%. Flapen's verdict: Skip it (46/100).
- How competitive is the biotin with keratin niche?
- 13 brands and 550 sellers compete. The top 5 products take 70% of clicks and top 5 brands hold 74% of demand.
- What do buyers complain about in biotin with keratin?
- Top complaints mined from reviews: Functionality-Overall, Dosage, Hair Related. The return rate is 0.0%.
- When does demand for biotin with keratin peak?
- Demand peaks in Oct; the busiest month runs 1.7× the quietest.
- What does it cost to enter the biotin with keratin niche?
- Listings span $8.00–$49.31; the average listing price is $19.10 (sweet spot $15–$100). The average incumbent carries 12,479 reviews — the moat a new listing must climb.