“CERTIFIED”
Evidence →“GMP-certified” describes factory processes, not what is in the bottle. The claim does not name a certifier or public register that a shopper can check.
Exact product checked · GTIN 00850011016725NuBest · checked Aug 15, 2026 · on sale since Aug 9, 2018USPTO returned 2 exact supplement-class owner records · inspect the identity trailPackage says distributed by: NUBEST, INC. · 1910 Thomes Ave, Cheyenne, WY 82001, USA
Quick read · NuBest
Nubest Hair Xtra
Checked against public sources on August 15, 2026 · LookCloser does not sell or recommend supplements.
60capsules · 30 servings
Does the marketing hold up?
Ingredient amounts are hidden inside “Hair Wellness Proprietary Blend”. A blend total may be legal, but it prevents you from knowing whether any individual ingredient reaches a meaningful amount.
Is the dose real?✓Listing and panel agreeboth say 3,000 mcg of Biotin
What a serving costs$0.96per serving, at the checked price
Is it tested?No testing claim made
Who’s behind it?USPTO lists 2 owner recordssame brand name, more than one registrant — we don’t choose between them
Is it the real thing?✓Barcode matches outside records
Trouble on record?✓No recalls found
“Couldn’t verify” means we looked and found no public proof — not a mark against the product. Most supplement claims cannot be independently verified by anyone, so grey is the normal state of this industry.
2◖ partly confirmedno contradictions · no recalls
The label itself
What the Supplement Facts panel says
| Vitamin A (as Beta Carotene) | 900 mcg |
|---|---|
| Vitamin C (as Ascorbic Acid) | 100 mg |
| Vitamin D3 (as Cholecalciferol) | 20 mcg |
| Vitamin E (as D-Alpha Tocopheryl Acetate) | 15 mg |
| Vitamin B1 (as Thiamine HCl) | 3 mg |
| Vitamin B2 (as Riboflavin) | 3 mg |
| Vitamin B3 (as Niacinamide) | 10 mg |
| Vitamin B6 (as Pyridoxine HCl) | 5 mg |
| Folate (as Folic Acid) | 400 mcg DFE |
| Vitamin B12 (as Cyanocobalamin) | 6 mcg |
| Biotin | 3000 mcg |
| Pantothenic Acid (as Calcium-D-Pantothenate) | 5.5 mg |
| Choline (as Choline Bitartrate) | 10 mg |
| Calcium (as Calcium Carbonate) | 250 mg |
| Zinc (as Zinc Oxide) | 12 mg |
| Selenium (as Selenium Amino Acid Chelate) | 25 mcg |
| Manganese (as Manganese Amino Acid Chelate) | 5 mg |
| Hair Wellness Proprietary Blend | 336 mg |
| BioPerine Black Pepper Extract (Piper nigrum, Fruit) (Std. to 95% Piperine) | 10 mg |
Printed on the package: Gluten Free · GMO Free · Dairy Free · Soy Free · FDA REGISTERED FACILITY · GMP CERTIFIED
We read 19 lines from the package photograph. It is our transcript of the label, not the manufacturer’s panel, and it may be incomplete.
Marketing claims, checked
The checks, one by one
The public sources did not settle the marketing promises on this label.
◐Partly confirmed2
“NuBest Hair Xtra Hair Growth Vitamins for Women & Men, Biotin 3000 mcg Hair Supplement with MSM, Zinc, B Vitamins, Horsetail & Hyaluronic Acid,…”
Evidence →Published research exists for ingredients in this formula. Whether this product’s doses match those studies could not be confirmed.
Ingredient research can support context, but it is not a trial of this exact product.
Marketing language, not scored
PREMIUM
Quick read · 3 useful findings
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
Public contextWho is behind it?
Registered owner records: NUBEST, INC. · Nguyen, Thang Huu
The public ownership record is ambiguous. We show the exact candidates instead of choosing one by name similarity.
Evidence and sources
USPTO returned multiple live supplement-class records for the exact brand wordmark: NUBEST, INC., Nguyen, Thang Huu. These records answer who owns registrations for the brand; the separate product-to-owner or manufacturer link remains open.
Locked evidence record →Open the full source-linked findingCheckedWho is behind it?
The barcode identity checks out · 850011016725.
The barcode matches, so we are checking the right product rather than a look-alike.
Evidence and sources
The brand's store lists this exact barcode as “Hair Xtra, Premium Hair Growth Support for Men & Women, 60 Vegan Capsules” (variant: 1-pack) — identity confirmed across retailer listings.
Locked evidence record →Open the full source-linked findingWhat remains open 2
- No FDA recall matched this brand in the current search.
- We have not found a public label filing for this exact product.
These are evidence gaps, not strikes against the product.
Who owns the brand wordmark?
The brand has 2 exact supplement-class records
These are the USPTO records behind the brand name. We show them all rather than choosing one by similarity.
🇺🇸NUBEST, INC.
WYOMING, USA; SINGAPORE · Registration 7169615
1910 THOMES AVENUE, CHEYENNE, WYOMING 82001, UNITED STATES
Goods covered by this record
IC 005: Dietary and nutritional supplements; vitamin supplements; multivitamin preparations.
🌍Nguyen, Thang Huu
VIETNAM; SINGAPORE · Registration 5751063
13 S7 Rd, Tay Thanh Ward, Tan Phu Dist., Ho Chi Minh City, 700000, VIETNAM
Goods covered by this record
IC 005: Dietary and nutritional supplements.
This answers who owns registrations for the brand wordmark. It does not by itself prove which entity made, imported, or sold this specific product. Open USPTO source ↗
Research behind the findings
Dose and research context
We could not match an amount on this product to a studied range for the same ingredient, so these links are ingredient background rather than a measurement of this product.
Background reading
What the research says about these amounts
Not a score. Studies disagree with each other and change over time, so this sits beside the evidence rather than counting toward it — it is here so you can read the sources yourself.
The panel lists 12 mg of zinc per serving. Studies we found used 8 mg–40 mg a day, so this sits inside that range.
0studied 8 mg–40 mg
Study ranges differ between trials and change as research changes. This is background reading, not a pass, a failure, or a recommendation.
Where it sells
Price check for this exact product
Brand website
Exact UPC/GTIN match$28.89
$0.96 per labeled serving
matching UPC/GTIN · checked Aug 15, 2026
View on Brand website ↗Amazon
Exact UPC/GTIN match$28.89
$0.96 per labeled serving
matching UPC/GTIN · checked Aug 16, 2026
View on Amazon ↗iHerb
Not confirmedNo exact listing saved
We only show a price when the seller publishes the same barcode as the bottle. We haven’t found that match here.
Search iHerb ↗Target
Not confirmedNo exact listing saved
We only show a price when the seller publishes the same barcode as the bottle. We haven’t found that match here.
Search Target ↗Walmart
Not confirmedNo exact listing saved
We only show a price when the seller publishes the same barcode as the bottle. We haven’t found that match here.
Search Walmart ↗Same UPC/GTIN observed across 2 sellers at the same price at check time.
Reference prices only · no affiliate links · every compared seller must publish the matching UPC/GTIN.
Want to inspect the evidence?
The full report shows every source, the exact unresolved question, and the documentation that would settle it.
Record built August 16, 2026. Sources: source listing observed at check time · USPTO Trademark Search · Keepa exact-listing history · NIH / published research · certification and regulator records where available. LookCloser publishes evidence and gaps; it does not advise for or against any supplement. Evidence-based corrections welcome.