biotin hair growth serum
Skip itSoft demand (-15.6% this quarter) — this niche doesn't clear our bar today.
Returns
Incredible0.9%return rate — above 5% kills the launch gate
Avg price
Great$18.97avg listing price — sweet spot $15–$100
Price range
Great$7.48–$47.89cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good6.6%search→purchase rate — share of searches ending in a sale
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Competition
Okay67%top-5 click share — leaders hold, buyers still browse
Brand share
Bad91%top-5 brand share — brand-locked demand
Market size
Bad$78K$78K/yr · 62K searches
Review moat
Bad15,433.79avg incumbent reviews — the moat a new listing must climb
Growth
Bad-15.6%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, biotin hair growth serum is a $78K/yr Amazon United States market (62K searches/yr). The top 5 brands hold 91% of demand. Demand peaks in Jul–Oct. Verdict: Skip it — 44/100.
Data updated Jul 14, 2026 · scored weekly · How we score niches
biotin hair growth serum market data
- Units sold / yr
- 4K–5K
- avg 100–250/product
- Revenue / yr
- $76K–$95K
- units × avg price
- Conversion rate
- 6.6%
- Avg BSR
- #163
- Page quality
- 0%
- Prime
- 95%
- Sponsored
- 79%
- Out of stock
- 0.0%
- Avg brand age
- 49 months
- Avg seller age
- 128 days
Competition & brand share
The top 5 products take 67% of clicks — established leaders, but buyers still shop beyond them.Brands
10 falling
Sellers
72
Top-5 brand share
91%
Top 20: 100%
Top-5 click share
67%
Top 20: 100%
Open market
7%
- L LUSETA59%
- LUSETA12%
- Meraz Pureauty Naturals9%
- BELLISSO8%
- PURE RESEARCH3%
- HerStyler2%
- Open — no brand owns it (4 brands, 7%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -15.6% search growth over the last 90 days.Peak months: Jul, Oct · busiest ÷ quietest = 2.0×
Top biotin hair growth serum search terms
- luseta biotin and collagen shampoo9K/yr
- biotin hair serum14K/yr
- luseta biotin and collagen20K/yr
- biotin serum7K/yr
- biotin hair growth serum8K/yr
- biotin serum for hair growth women5K/yr
Top biotin hair growth serum 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 19 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Luseta Biotin & Collagen Shampoo and Conditioner Set for Thinning Hair Thickening & Strengthening with Argan Oil - Adds Volume Shine & Manageability Sulfate Free Paraben Free -16.9 fl oz (2 Pack)
L LUSETA$27.644.3★19,653 rev
Luseta Biotin and Collagen Hair Growth Shampoo - 16.9oz Hair Loss & Thickening Shampoo for Men & Women Vitamin B7 & Argan Oil Sulfate & Paraben Free
L LUSETA$14.084.3★19,653 rev
LUSETA L Biotin & Collagen Hair Oil Serum for Thin Hair 3.38 fl oz
LUSETA$16.254.5★6,096 rev
Biotin Hair Growth Serum Advanced Topical Formula To Help Grow Healthy Strong Hair Suitable for Men and Women of All Hair Types Hair Loss Support By Pureauty Naturals 2 Fl Oz (Pack of 1)
Meraz Pureauty Naturals$19.704.0★13,926 rev
Biotin Hair Thickening Serum for Men and Women - Intense Strengthening Treatment Product with Natural Botanical Oil Blend to Help Boost Thin Hair - Repair Thinning Hair Increase Volume and Shine
BELLISSO$13.054.4★6,072 rev
Newest
by launch date
Luseta Biotin & Collagen Heat Protection Spray Preventing Heat-induced Hair Breakage for Styling for Women and Men 8.5oz
L LUSETA$16.25407 rev
Herstyler Biotin Hair Serum - Hair Growth Serum for Hair Loss - Also Contains Argan Oil - 2 Fl Oz - Pack of 1
HerStyler$9.70452 rev
Biotin Hair Thickening Serum for Men and Women - Intense Strengthening Treatment Product with Natural Botanical Oil Blend to Help Boost Thin Hair - Repair Thinning Hair Increase Volume and Shine
BELLISSO$13.056,072 rev
Hair Chemist Biotin Pro-Growth Premium Hair Oil 7.1 oz.
Hair Chemist$8.731,120 rev
Luseta Biotin Leave in Conditioner Volumizer for Dry & Fine Hair 8.5Fl Oz
L LUSETA$14.261,635 rev
Trending
90-day click momentumHair Chemist Biotin Pro-Growth Premium Hair Oil 7.1 oz.
Hair Chemist$8.734.6★
Biotin & Collagen Shampoo Conditioner Set Thicking Shampoo for Hair Loss & Fast Hair Growth Sulfate & Paraben Free Keratin & Color Safe 216.9oz
L LUSETA$26.574.4★
Mielle Organics Rosemary & Mint Hair Oil - Strengthening Biotin Oil Infused Frizzy & Damaged Hair Care - Split Ends & Dry Scalp Treatment to Support Longer Healthier Strands 2 Ounce
Mielle Organics$8.784.5★
Paisle Botanics Hair Growth Serum for Hair Loss Natural Biotin Fine Hair Thickener for Women & Men 4 oz
Paisle Botanics$19.494.2★
L LUSETA Biotin & Collagen Shampoo & Conditioner Set (2 x 33.8oz) - Thickening for Hair Growth Infused with Argan Oil to Repair Dry Damaged Hair
L LUSETA$47.894.3★
What buyers say about biotin hair growth serum
What buyers praise and complain about, mined from review topics.What buyers love
“Great scent”
“Real hair growth”
“Great Product and reasonably affordable”
“you're hair feels soft”
“keeps it moisturized”
“Worth the money”
“Easy to use”
“Gives hair fullness and shine”
“Great smelling and non-greasy”
“gives a pleasant shine”
What buyers complain about
“Made my hair greasy”
“its making my hair fall out more”
“Allergic Reaction”
“Strong smell”
“Caused more damage to my hair”
“It doesnt really moisturize the hair”
“no results as of yet”
“there is an almond oil in the ingredients so Im not sure if that was it or not”
“Very thick oil”
“Hair loss”
Top return reasons
Common questions
- Is biotin hair growth serum profitable to sell on Amazon United States?
- The niche generates $78K/yr across 19 tracked products. 90-day search growth is -15.6%. Flapen's verdict: Skip it (44/100).
- How competitive is the biotin hair growth serum niche?
- 10 brands and 72 sellers compete. The top 5 products take 67% of clicks and top 5 brands hold 91% of demand.
- What do buyers complain about in biotin hair growth serum?
- Top complaints mined from reviews: Oily/Greasy, Hair Related, Allergies. The return rate is 0.9%.
- When does demand for biotin hair growth serum peak?
- Demand peaks in Jul–Oct; the busiest month runs 2.0× the quietest.
- What does it cost to enter the biotin hair growth serum niche?
- Listings span $7.48–$47.89; the average listing price is $18.97 (sweet spot $15–$100). The average incumbent carries 15,434 reviews — the moat a new listing must climb.