Full record · lc-8b80606b · back to the summary
Hair Growth Vitamins for Women | Biotin 10,000mcg
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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.
The 10 mg biotin claim matches the panel
We did the comparison: the listing claims 10 mg of biotin, and the listing-image panel shows 10 mg biotin 2 capsules. Those amounts agree. This is internal consistency, not independent lab testing.
| Panel row | Amount | %DV | What to notice |
|---|---|---|---|
| Vitamin A (as Retinyl Palmitate) | 2,700 mcg | — | |
| Vitamin C (Ascorbic Acid) | 100 mg | — | |
| Vitamin D3 (Cholecalciferol) | 2.5 mcg | — | |
| Vitamin E (as D-alpha Tocopheryl Succinate) | 10 mg | — | |
| Thiamin (as Thiamin HCI) | 5 mg | — | |
| Riboflavin | 5 mg | — | |
| Niacin (as Niacinamide) | 5 mg | — | |
| Vitamin B6 (as Pyridoxine HCI) | 5 mg | — | |
| Folate (as 334mcg Folic Acid) | 568 mcg DFE | — | |
| Vitamin B12 (as Cyanocobalamin) | 20 mcg | — | |
| Biotin | 10,000 mcg | — | |
| Pantothenic Acid (as Calcium Pantothenate) | 100 mg | — | |
| Zinc (as Zinc Citrate) | 15 mg | — | |
| OptiMSM® Methylsulfonylmethane (MSM) | 400 mg | — | |
| Hydrolyzed Bovine Collagen | 200 mg | — | |
| Medium Chain Triglycerides | 100 mg | — | |
| Proprietary Hair Growth Complex | 300 mg | — |
FDA rules (21 CFR 101.36) require the amount of each dietary ingredient per serving unless hidden in a declared “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:google/gemini-flash-1.5 Amounts are shown as declared panel data, not independently lab-tested contents.
Every check we ran
Ingredient amounts are hidden inside a blend
The panel lists “Proprietary Hair Growth Complex” as a combined amount. A blend total can’t tell you whether any single ingredient reaches a dose used in research.
No data yet: Testing claimed — documentation not found
The observed listing claims third-party testing without naming a lab or certifier. No product-bound report is retained, so the claim cannot be verified as stated. NSF, IFOS, USP, and Informed-Sport were not checked in this record.
Listing claim matches the Supplement Facts panel
The listing claims 10 mg; the photo-read Supplement Facts panel shows Biotin at 10 mg per serving — the listing text and its photo-read panel agree; this is internal consistency, not independent testing.
Research context is available for the listed ingredients
Published sources describe how collagen peptides, zinc have been studied. This is ingredient context only; the record does not establish that this product delivers the studied dose or outcome. Sources: PubMed search: collagen peptide supplementation trial, WebMD search: collagen.
180-day review-count history is on file
Exact-listing history records written-review counts from 586 on 2026-01-31 to 831 on 2026-07-21 (net +245). Count movements can reflect sales, listing variants, collection resets, or moderation; this history does not establish whether reviews are authentic.
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.
What the listing promises — claim by claim
Why is this shown?
| Claim | Status | What we found |
|---|---|---|
| Quality-testing claim “…e. All these premium quality ingredients are 3rd party tested and blended into one powerful supplement to…” | Claimed, not verifiable We looked for: the observed listing, retained brand product page, any linked COA or test report; NSF, IFOS, USP, Informed-Sport were not queried | No named laboratory or lot-specific certificate was found for this exact product. No exact brand product page was available for a document check. NSF, IFOS, USP, and Informed-Sport were not checked in this record. This is a public-evidence limit, not a finding that testing did not occur. |
| Manufacturing claim “…Non-GMO and is made in the USA under strict GMP-certified facilities. Each serving contains…” | Claimed, not verifiable We looked for: the facility registration or certificate behind the claim | Facility-level claims can be accurate and still say nothing about this product’s contents. No registration document was located. |
| Origin claim “…& Healthier Hair, Skin and Nails |Non GMO + Made in USA|60 Day Supply Natural Hair, Skin, and Nail S…” | Claimed, not verifiable We looked for: customs records or label filings showing where ingredients were sourced and where it was made | “Made in USA” can describe only final bottling. Ingredient-sourcing records were not located for this product. |
| Benefit claim “…d OptiMSM®, goMCT®, Saw Palmetto | Naturally Supports Stronger & Healthier Hair, Skin and Nails |N…” | 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 — see Related research below. 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?
| Ingredient | Where this label sits | Reading |
|---|---|---|
| Hydrolyzed Bovine Collagen | shaded = doses used in studies (2.5 g–15 g) · bar = this label | 200 mg — below the studied range |
| Zinc (as Zinc Citrate) | shaded = doses used in studies (8 mg–40 mg) · bar = this label | 15 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 — 2 of 6 public signals
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
| LookCloser record ID | lc-8b80606b (internal — no barcode published, which limits cross-checking) |
| Brand | Rainbow Nutrients, LLC |
| Source listing identifier | B0BYYDZBH1 |
| Retailer listing title | Hair Growth Vitamins for Women | Biotin 10,000mcg, Collagen, Patented … show full titleHair Growth Vitamins for Women | Biotin 10,000mcg, Collagen, Patented OptiMSM®, goMCT®, Saw Palmetto | Naturally Supports Stronger & Healthier Hair, Skin and Nails |Non GMO + Made in USA|60 Day Supply |
From the label (photo-read)
| Serving size | 2 Capsules |
| Servings per container | 60 |
| Pack statement | 120 CAPSULES |
| Badges printed on pack | OptiMSM®, NON GMO INGREDIENTS, PROFESSIONAL GRADE, LAB TESTED, MADE IN USA, GMPc FACILITY, goMCT®, ZERO ADDED |
Supplement Facts panel (photo-read):
| Ingredient | Amount per serving | Reading confidence |
|---|---|---|
| Vitamin A (as Retinyl Palmitate) | 2,700 mcg | High clearly legible in the photo |
| Vitamin C (Ascorbic Acid) | 100 mg | High clearly legible in the photo |
| Vitamin D3 (Cholecalciferol) | 2.5 mcg | High clearly legible in the photo |
| Vitamin E (as D-alpha Tocopheryl Succinate) | 10 mg | High clearly legible in the photo |
| Thiamin (as Thiamin HCI) | 5 mg | High clearly legible in the photo |
| Riboflavin | 5 mg | High clearly legible in the photo |
| Niacin (as Niacinamide) | 5 mg | High clearly legible in the photo |
| Vitamin B6 (as Pyridoxine HCI) | 5 mg | High clearly legible in the photo |
| Folate (as 334mcg Folic Acid) | 568 mcg DFE | High clearly legible in the photo |
| Vitamin B12 (as Cyanocobalamin) | 20 mcg | High clearly legible in the photo |
| Biotin | 10,000 mcg | High clearly legible in the photo |
| Pantothenic Acid (as Calcium Pantothenate) | 100 mg | High clearly legible in the photo |
| Zinc (as Zinc Citrate) | 15 mg | High clearly legible in the photo |
| OptiMSM® Methylsulfonylmethane (MSM) | 400 mg | High clearly legible in the photo |
| Hydrolyzed Bovine Collagen | 200 mg | High clearly legible in the photo |
| Medium Chain Triglycerides | 100 mg | High clearly legible in the photo |
| Proprietary Hair Growth Complex | 300 mg | High clearly legible in the photo |
Claims printed on the packaging:
“Supports Healthy Hair Growth*” · “Supports Hair Strength & Thickness*” · “Supports Healthy Hair, Skin & Nails*” · “VIRAL ON TIKTOK” · “MADE IN USA” · “DIETARY SUPPLEMENT” · “Promotes thicker hair” · “Fights against hair loss”
Read by a vision model from 8 listing photos — verbatim extraction; OCR errors possible. Spot a mistake? It will be corrected on review.
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
Zinc — NIH ODS · MedlinePlus · PubMed (19,708) · UL 40 mg (adults, from all sources)
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 declared amount and the reference are shown for your own judgment. LookCloser gives no medical advice.
Related research & consistency
collagen peptides — PubMed search: collagen peptide supplementation trial · WebMD search: collagen · ClinicalTrials.gov — 587 registered studies
ℹ Use pattern in research: daily oral use over 8+ weeks in studies.
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 lc-8b80606b · built July 23, 2026 · lookcloser.ai · corrections@lookcloser.ai