Found on the brand's own store
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.
Full record · 850011016725 · back to the summary
Nubest Hair Xtra, Premium Hair Growth Support for Men & Women, 60 Vegan Capsules
Exact product checkedGTIN 00850011016725 · checked 2026-08-15
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How to read this report
What this is. We compare what a listing claims against what public records show — label arithmetic, barcode registries, NIH’s label catalog, FDA enforcement data, certification registries, and published research. Every statement below traces to one of those.
What the states mean. Confirmed = an outside source agrees. Contradicted = an outside source disagrees. Caution = something needs explaining. No data = we looked and found nothing — a gap, not a strike.
What it is not. A clean record is not an endorsement and never proof a product works. A thin record is not an accusation. We publish evidence and gaps; the conclusion is yours. Nothing here is medical advice.
Something wrong? Every figure is meant to be checkable — sources are named and linked. Send a correction and we’ll fix the record.
Panel, decoded
The 3 mg biotin claim matches the panel
MARKETING3 mg — listing title
PANELBiotin 3 mg — same amountCalcium (as Calcium Carbonate) 250 mg + Hair Wellness Proprietary Blend 336 mg
matches panelWe did the comparison: the listing claims 3 mg of biotin, and the listing-image panel shows 3 mg biotin serving size: 2 capsules. Those amounts agree. This is internal consistency, not independent lab testing.
| Panel row | Amount | %DV | What to notice |
|---|---|---|---|
| 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 | — |
FDA rules (21 CFR 101.36) require the amount of each dietary ingredient per serving unless hidden in a listed “proprietary blend” (legal, but a transparency yellow flag). A label stating no amount at all is non-compliant — a checkable red flag. This panel states amounts; any remaining comparison concerns the front-label framing.
vision:claude-cli:subscription Amounts are shown as listed panel data, not independently lab-tested contents.
Every check we ran
Confirmed evidence
What checked out2
These checks found support in the public record. They confirm specific facts, not the product as a whole.
Confirmed
Barcode confirmed in an outside database
UPCitemdb resolves 850011016725 to "Hair Xtra by NuBest Supports Hair Strength & Volume for Men & Women 60 Vegan C" (NuBest) — consistent with this listing.
Documented concerns
What needs caution1
These are documented contradictions or claims that need more evidence. They are separate from missing data.
Unresolved public record
What is still missing7
We looked for these signals but could not settle them from public sources. A gap is not a strike.
Multiple USPTO brand-owner records are shown
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.
Multi-ingredient formula — panel read, serving weight unknown
We read the full Supplement Facts panel from the listing-image panel (below), but the label doesn’t state a serving weight, so the arithmetic can’t run. A gap in the label’s information, not evidence of a problem.
Research context is available for the listed ingredients
Published sources describe how zinc have been studied. This is ingredient context only; the record does not establish that this product delivers the studied dose or outcome. Sources: NIH ODS — Zinc fact sheet, PubMed search: zinc supplementation trial.
Public label filing not saved
We have not found a public label filing for this exact product. That is a gap in our records, not evidence that no filing exists.
No recall found — which is not the same as being tested
This means only that no enforcement record matched the brand name — it does not mean the product was tested, reviewed, or cleared by FDA. New and untested products also have no recall records.
This item belongs to a catalog variation family
The paid catalog links this exact item to a parent listing. Review counts on public product pages may be shared across sizes, flavors, or other variants, so the count history is listing context — not evidence that reviewers received or tested this exact variant.
180-day review-count history is on file
Exact-listing history records written-review counts from 24 on 2025-08-13 to 25 on 2026-01-04 (net +1). Count movements can reflect sales, listing variants, collection resets, or moderation; this history does not establish whether reviews are authentic.
What to ask and check
What would settle the open questions
Why is this shown?
Everything we couldn’t verify is something a person can still ask about. Rather than leave gaps sitting as dead ends, we turn each one into a specific question — the exact document, citation, or number that would settle it — plus the things you can confirm yourself with the bottle in your hand.
Ask the brand or seller
1
Answered by the panel: the 0.003 g listing number equals Folate (as Folic Acid) 0.4 mg + Biotin 3 mg. What lot-specific document confirms those listed amounts?
The panel resolves what the headline number includes. The remaining question is whether the product in hand matches those listed amounts; ask for a lot-specific certificate of analysis.
2
Is this label filed with NIH’s Dietary Supplement Label Database (DSLD)?
Filing is voluntary, so absence proves nothing — but a filed label puts the full ingredient table on public record where anyone can read it.
3
What is the amount of each ingredient inside the proprietary blend?
A blend total tells you nothing about whether any single ingredient reaches a dose used in research. Brands may decline — that answer is informative too.
Most brands and sellers publish a contact route. A clear answer adds evidence to the record; no answer leaves the question open.
Check for yourself — no one’s permission needed
1
Compare the panel on the bottle in your hand to the one shown in this record.
Ours was read from listing photos and can contain reading errors. The physical label is the source of truth — if they disagree, tell us and we’ll correct the record.
2
Scan the barcode on the package and confirm it reads 850011016725.
A mismatch between the barcode on the box and the one on the listing is worth pausing over — it can indicate a different variant, a repack, or a counterfeit.
3
Check the lot number and expiry on the bottle against any COA you’re given.
A certificate that doesn’t name your lot doesn’t describe what you’re holding.
These are the open questions on this specific record — not a warning about the product, and not a suggestion to buy or avoid it. Getting them answered is how you decide for yourself.
What the listing promises — claim by claim
Why is this shown?
A listing’s promises are the reason people buy. Each one gets its own row: what was promised, what evidence would settle it, and what we could actually find. We never call a claim false — only whether proof proportionate to it exists on the public record.
| Claim | Status | What we found |
|---|---|---|
| Manufacturing claim “…GMP CERTIFIED” | Partly supported We looked for: the facility registration or certificate behind the claim | “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. |
| Benefit claim “NuBest Hair Xtra Hair Growth Vitamins for Women & Men, Biotin 3000 mcg Hair Supplement with MSM, Zinc, B Vitamins, Horsetail & Hyaluronic Acid, Hair Skin and Nails Suppor” | Partly supported We looked for: whether the ingredient doses on the label match the doses used in published research | Published research exists for ingredients in this formula. Whether this product’s doses match those studies could not be confirmed. |
“No evidence located” does not mean a claim is false — it means the seller has not put evidence proportionate to the claim on the public record, and we could not find any. Absence of proof is not proof of absence.
This label vs. the doses studied
Why is this shown?
An ingredient can be well-studied at one amount and barely studied at the amount in your bottle. This lines the label up against the doses researchers actually used. It answers ‘are these the same numbers?’ — never ‘should you take this?’
| Ingredient | Where this label sits | Reading |
|---|---|---|
| Zinc (as Zinc Oxide) | shaded = doses used in studies (8 mg–40 mg) · bar = this label | 12 mg — within the studied range |
Matching a studied dose does not mean the product works, and missing it does not mean it fails — it shows whether the label and the research are talking about the same amounts. Not a recommendation to take any amount.
Documented cautions
- zinc — daily oral use; sustained high intakes can interfere with copper absorption — a documented interaction, not advice
Statements from published sources about these ingredients — not advice about this product, and not a complete safety review. Anyone taking medication should talk to a pharmacist or clinician.
Verifiability profile — 3 of 6 public signals
✓ UPC / GTIN published✓ Supplement Facts visible in photos✓ Brand's own store found· Per-serving dose established — not published· Found in NIH's label catalog (DSLD) — not published· Third-party lab named or registry-certified — not published
What this listing gives the public to check. Publishing these signals doesn't prove quality — but withholding them means claims can only be taken on faith.
Identity
| UPC (barcode) — also our record ID | 850011016725 — via source listing UPC |
| Brand | NuBest |
| Source listing identifier | B0B58DCF6X |
| Retailer listing title | NuBest Hair Xtra Hair Growth Vitamins for Women & Men, Biotin 3000 mcg… show full titleNuBest Hair Xtra Hair Growth Vitamins for Women & Men, Biotin 3000 mcg Hair Supplement with MSM, Zinc, B Vitamins, Horsetail & Hyaluronic Acid, Hair Skin and Nails Support, 60 Capsules |
| USPTO brand-owner record | NUBEST, INC. · WYOMING, USA; SINGAPORE · registration 7169615 · 1910 THOMES AVENUE, CHEYENNE, WYOMING 82001, UNITED STATES |
| USPTO brand-owner record | Nguyen, Thang Huu · VIETNAM; SINGAPORE · registration 5751063 · 13 S7 Rd, Tay Thanh Ward, Tan Phu Dist., Ho Chi Minh City, 700000, VIETNAM |
From the label (photo-read)
| Serving size | Serving Size: 2 Capsules |
| Servings per container | 30 |
| Pack statement | 60 VEGETARIAN CAPSULES |
| Badges printed on pack | Gluten Free, GMO Free, Dairy Free, Soy Free, FDA REGISTERED FACILITY, GMP CERTIFIED |
Supplement Facts panel (photo-read):
| Ingredient | Amount per serving | Reading confidence |
|---|---|---|
| Vitamin A (as Beta Carotene) | 900 mcg | High clearly legible in the photo |
| Vitamin C (as Ascorbic Acid) | 100 mg | High clearly legible in the photo |
| Vitamin D3 (as Cholecalciferol) | 20 mcg | High clearly legible in the photo |
| Vitamin E (as D-Alpha Tocopheryl Acetate) | 15 mg | High clearly legible in the photo |
| Vitamin B1 (as Thiamine HCl) | 3 mg | High clearly legible in the photo |
| Vitamin B2 (as Riboflavin) | 3 mg | High clearly legible in the photo |
| Vitamin B3 (as Niacinamide) | 10 mg | High clearly legible in the photo |
| Vitamin B6 (as Pyridoxine HCl) | 5 mg | High clearly legible in the photo |
| Folate (as Folic Acid) | 400 mcg DFE | High clearly legible in the photo |
| Vitamin B12 (as Cyanocobalamin) | 6 mcg | High clearly legible in the photo |
| Biotin | 3000 mcg | High clearly legible in the photo |
| Pantothenic Acid (as Calcium-D-Pantothenate) | 5.5 mg | High clearly legible in the photo |
| Choline (as Choline Bitartrate) | 10 mg | High clearly legible in the photo |
| Calcium (as Calcium Carbonate) | 250 mg | High clearly legible in the photo |
| Zinc (as Zinc Oxide) | 12 mg | High clearly legible in the photo |
| Selenium (as Selenium Amino Acid Chelate) | 25 mcg | High clearly legible in the photo |
| Manganese (as Manganese Amino Acid Chelate) | 5 mg | High clearly legible in the photo |
| Hair Wellness Proprietary Blend | 336 mg | High clearly legible in the photo |
| BioPerine Black Pepper Extract (Piper nigrum, Fruit) (Std. t | 10 mg | High clearly legible in the photo |
Claims printed on the packaging:
“Hair Wellness Complex” · “PREMIUM” · “FORMULATED TO SUPPORT” · “Hair Strength” · “Healthy Hair Growth” · “Hair Beauty From Within” · “DIRECTIONS” · “For adults: Take 2 capsules daily, preferably with a meal”
Read by a vision model from 7 listing photos — verbatim extraction; OCR errors possible. Spot a mistake? It will be corrected on review.
Where it sells
| Seller | Price |
|---|---|
| Retailer listing ↗ | $28.89 checked Aug 16, 2026 — varies by variant/session; price history pending |
| Brand store (nubest.com) ↗ | $28.89 variant: 1-pack — matching UPC/GTIN |
Brand store nubest.com: 35 supplement products (+43 merch items) — a single-category catalog.
Reference links for identification only — LookCloser has no affiliate relationships and earns nothing from any link on this page.
Ingredient science — NIH references
Vitamin A — NIH ODS · MedlinePlus · PubMed (10,699) · UL 3000 mcg (preformed vitamin A (retinol); excludes beta-carotene)
Vitamin C — NIH ODS · MedlinePlus · PubMed (11,019) · UL 2000 mg (total intake, adults)
Vitamin D — NIH ODS · MedlinePlus · PubMed (26,500) · UL 100 mcg (adults; 100 mcg = 4,000 IU)
Vitamin E — NIH ODS · MedlinePlus · PubMed (12,326) · UL 1000 mg (supplemental alpha-tocopherol, adults)
Thiamin — NIH ODS · MedlinePlus · PubMed (1,262) · no UL established
Riboflavin — NIH ODS · MedlinePlus · PubMed (3,172) · no UL established
Niacin — NIH ODS · MedlinePlus · PubMed (2,689) · UL 35 mg (supplemental/added niacin, adults)
Vitamin B6 — NIH ODS · MedlinePlus · PubMed (2,372) · UL 100 mg (adults; chronic high intake linked to neuropathy)
Folate — NIH ODS · MedlinePlus · PubMed (10,628) · UL 1000 mcg (synthetic folic acid from supplements/fortified food)
Vitamin B12 — NIH ODS · MedlinePlus · PubMed (5,006) · no UL established
Biotin — NIH ODS · MedlinePlus · PubMed (1,606) · no UL; high doses interfere with lab tests
Pantothenic Acid — NIH ODS · MedlinePlus · PubMed (601) · no UL established
Choline — NIH ODS · MedlinePlus · PubMed (7,299) · UL 3500 mg (adults)
Calcium — NIH ODS · MedlinePlus · PubMed (48,938) · UL 2500 mg (adults 19-50 (2,000 mg for 51+))
Zinc — NIH ODS · MedlinePlus · PubMed (19,708) · UL 40 mg (adults, from all sources)
Selenium — NIH ODS · MedlinePlus · PubMed (12,481) · UL 400 mcg (adults)
Manganese — NIH ODS · MedlinePlus · PubMed (3,608) · UL 11 mg (adults)
Reference data from the NIH Office of Dietary Supplements, IOM Dietary Reference Intakes, and PubMed. A Tolerable Upper Intake Level is a documented reference figure, not a safety verdict — both the listed amount and the reference are shown for your own judgment. LookCloser gives no medical advice.
Related research & consistency
zinc — NIH ODS — Zinc fact sheet · PubMed search: zinc supplementation trial · ClinicalTrials.gov — 1,598 registered studies
ℹ Use pattern in research: daily oral use; sustained high intakes can interfere with copper absorption — a documented interaction, not advice.
These notes state where label numbers and marketing framing sit relative to published research — documentation for your own judgment, not medical advice. LookCloser does not advise for or against taking any supplement.
Record 850011016725 · built August 16, 2026 · lookcloser.ai · corrections@lookcloser.ai