---
title: "Biotin Hair Growth Serum — $78K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/beauty-personal-care/biotin-hair-growth-serum"
last_updated: "2026-08-09T13:03:58.469Z"
locale: en
meta:
description: "Niche score 44/100 · $78K/yr market · 62K searches/yr · $18.97 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 44/100 · $78K/yr market · 62K searches/yr · $18.97 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Biotin Hair Growth Serum — $78K/yr Amazon US Niche (2026) - Flapen"
---
# **biotin hair growth serum**
**Skip it**
Soft demand (-15.6% this quarter) — this niche doesn't clear our bar today.
Market size 20Growth 17Conversion 72Competition 29Returns 96Price range 80Avg price 85Brand share 24Review moat 19Quality gap 60
**Returns**
**Incredible****0.9%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$18.97**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$7.48–$47.89**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Good****6.6%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Competition**
**Okay****67%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Bad****91%**
top-5 brand share — brand-locked demand
**Market size**
**Bad****$78K**
$78K/yr · 62K searches
**Review moat**
**Bad****15,433.79**
avg 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 ~~](https://flapen.com/research/methodology)
## **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.
4K3KSpike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jul, Oct · busiest ÷ quietest = 2.0×
[**Open Trend **](https://flapen.com/research/us/beauty-personal-care/biotin-hair-growth-serum/trend)
## **Top biotin hair growth serum search terms**
- **luseta biotin and collagen shampoo**9K/yr+130.6%10.5% conv. - **biotin hair serum**14K/yr-23.2%4.8% conv. - **luseta biotin and collagen**20K/yr-64.1%7.5% conv. - **biotin serum**7K/yr-10.8%4.0% conv. - **biotin hair growth serum**8K/yr-30.6%2.0% conv. - **biotin serum for hair growth women**5K/yr-7.6%1.7% conv. [**All search terms **](https://flapen.com/research/us/beauty-personal-care/biotin-hair-growth-serum/search-terms)
## **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.
0%10%$8K20%$16K30%$23K40%$31K101001K10K100K1.0M Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 19 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**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**$27.64**4.3★19,653 rev](https://www.amazon.com/dp/B076DL1VLG) [2**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**$14.08**4.3★19,653 rev](https://www.amazon.com/dp/B07JDYKN2M) [3**LUSETA L Biotin & Collagen Hair Oil Serum for Thin Hair 3.38 fl oz**LUSETA**$16.25**4.5★6,096 rev](https://www.amazon.com/dp/B0794V5RW1) [4**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**$19.70**4.0★13,926 rev](https://www.amazon.com/dp/B076TYGMYQ) [5**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**$13.05**4.4★6,072 rev](https://www.amazon.com/dp/B08Z5GK3HX)
**~~View all top sellers →~~**
### **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**$16.25**407 rev2y ago](https://www.amazon.com/dp/B0D4M7DF3M) [**Herstyler Biotin Hair Serum - Hair Growth Serum for Hair Loss - Also Contains Argan Oil - 2 Fl Oz - Pack of 1**HerStyler**$9.70**452 rev4y ago](https://www.amazon.com/dp/B09R1NHJ52) [**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**$13.05**6,072 rev5y ago](https://www.amazon.com/dp/B08Z5GK3HX) [**Hair Chemist Biotin Pro-Growth Premium Hair Oil 7.1 oz.**Hair Chemist**$8.73**1,120 rev5y ago](https://www.amazon.com/dp/B0929L7XX9) [**Luseta Biotin Leave in Conditioner Volumizer for Dry & Fine Hair 8.5Fl Oz**L LUSETA**$14.26**1,635 rev5y ago](https://www.amazon.com/dp/B08SWGBP37)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Hair Chemist Biotin Pro-Growth Premium Hair Oil 7.1 oz.**Hair Chemist**$8.73**4.6★**▲ 133%**](https://www.amazon.com/dp/B0929L7XX9) [**Biotin & Collagen Shampoo Conditioner Set Thicking Shampoo for Hair Loss & Fast Hair Growth Sulfate & Paraben Free Keratin & Color Safe 216.9oz**L LUSETA**$26.57**4.4★**▲ 124%**](https://www.amazon.com/dp/B07KS27DP8) [**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**$8.78**4.5★**▲ 63%**](https://www.amazon.com/dp/B07N7PK9QK) [**Paisle Botanics Hair Growth Serum for Hair Loss Natural Biotin Fine Hair Thickener for Women & Men 4 oz**Paisle Botanics**$19.49**4.2★**▲ 48%**](https://www.amazon.com/dp/B08FCPLGFP) [**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**$47.89**4.3★**▲ 44%**](https://www.amazon.com/dp/B078GKPMSF)
**~~View all trending →~~**
## **What buyers say about biotin hair growth serum**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Smell**20%
*“Great scent”*
**Hair Growth**17%
*“Real hair growth”*
**Quality-Overall**14%
*“Great Product and reasonably affordable”*
**Soft Feel**9%
*“you're hair feels soft”*
**Moist/Dry**6%
*“keeps it moisturized”*
**Value For Money**4%
*“Worth the money”*
**Ease Of Use**2%
*“Easy to use”*
**Hair Styling**2%
*“Gives hair fullness and shine”*
**Oily/Greasy**2%
*“Great smelling and non-greasy”*
**Brightness/Shine/Glow**1%
*“gives a pleasant shine”*
### **What buyers complain about **
**Oily/Greasy**13%
*“Made my hair greasy”*
**Hair Related**10%
*“its making my hair fall out more”*
**Allergies**8%
*“Allergic Reaction”*
**Smell**7%
*“Strong smell”*
**Damage/Burn Hair**7%
*“Caused more damage to my hair”*
**Moist/Dry**6%
*“It doesnt really moisturize the hair”*
**Functionality-Overall**5%
*“no results as of yet”*
**Ingredients-Overall**3%
*“there is an almond oil in the ingredients so Im not sure if that was it or not”*
**Thickness**2%
*“Very thick oil”*
**Side Effects**2%
*“Hair loss”*
### **Top return reasons **
**Smell**19%
**Oily/Greasy**18%
**Advertised Vs Actual Product**8%
**Leak-Proof**8%
**Damage/Burn Hair**7%
**Value For Money**6%
**Functionality-Overall**5%
**Hair Related**4%
**Suitability Short Hair**4%
**Size-Overall**3%
## **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.
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