Advertised health or performance benefit
Evidence →Published research exists for ingredients in this formula — see Related research below. Whether this product’s doses match those studies could not be confirmed.
Exact product checked · GTIN 732940942897Rainbow Nutrients, LLC · observed 2026-07-24Package says manufactured by: Rainbow Nutrients · Seattle, WA 98188
Quick read · Rainbow Nutrients, LLC
Hair + Beard Growth Vitamins for Men
Marketing check: 1 marketing claim needs attention, 4 remain partly or independently unverified.
Rebuilt from public sources on July 24, 2026 · evidence availability is not a safety or effectiveness verdict.
120capsules · 60 servings
Marketing claims, checked
Does the marketing hold up?
Couldn’t verify means public proof was not found; it is not a mark against the product. Ingredient research is not treated as a trial of this exact product.
◐Partly confirmed1
△Claimed without support found1
“Clinically tested” or “science-backed”
Evidence →No named, citable study of this product or formula was located in public sources. The claim may rest on ingredient-level research rather than a trial of this product.
?Couldn’t verify independently3
GMP or manufacturing-quality language
Evidence →Facility-level claims can be accurate and still say nothing about this product’s contents. No registration document was located.
US manufacturing or origin language
Evidence →“Made in USA” can describe only final bottling. Ingredient-sourcing records were not located for this product.
1 more public-evidence limit
“Third-party tested”
Evidence →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.
Quick read · 1 useful finding
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
What remains open 4
- No identity-bound public label filing is retained in this record.
- Brand ownership is not settled in this record.
- Barcode checksum is valid; no independent product record was found.
- No dated review-history series is on file yet.
These are evidence gaps, not strikes against the product.
Research behind the findings
Dose and research context
Ingredient context used alongside the captured panel. These sources do not test this product or establish safety or effectiveness.
Dose vs research
0.01 g declared
The panel declares 0.01 g per serving, in the 2.5–15 g/day context cited in the research.
Comparison, not a safety verdict
Where it sells
Price check for this exact product
Amazon
Exact UPC/GTIN match$29.95
$0.50 per labeled serving
matching UPC/GTIN · observed 2026-07-24T11:26:46.599377+00:00
View on Amazon ↗iHerb
Not confirmedNo exact listing retained
Search results remain unbound until this retailer publishes the matching UPC/GTIN.
Search iHerb ↗Target
Not confirmedNo exact listing retained
Search results remain unbound until this retailer publishes the matching UPC/GTIN.
Search Target ↗Walmart
Not confirmedNo exact listing retained
Search results remain unbound until this retailer publishes the matching UPC/GTIN.
Search Walmart ↗Only one exact price was available at build time; prices change by date, seller, and promotion.
No official brand storefront is confirmed in this record. That is neutral, but it prevents a direct brand-price, label, review, and document check.
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.
Open the full evidence trailSources, edge cases, and every unresolved check
Confirmed evidence
What checked out00
These checks found support in the public record. They confirm specific facts, not the product as a whole.
Nothing could be independently confirmed from the available record.
Documented concerns
What needs caution01
These are documented contradictions or claims that need more evidence. They are separate from missing data.
Unresolved public record
What is still missing07
We looked for these signals but could not settle them from public sources. A gap is not a strike.
Review-count history: not available
Marketplace rating not shown★ — rating count unavailable. No exact-listing count history was available, so no review-pattern claim is made.
“Lab tested” claimed, but no lab or report named
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.
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 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.
Public label filing not retained
This record does not currently hold an identity-bound public label filing for the exact product. That is a LookCloser coverage gap, not evidence that no filing exists.
Brand ownership record not retained
This record does not hold an exact, supplement-class public ownership record for the brand. That is a LookCloser coverage gap, not evidence that the brand has no owner or that the product is improper.
UPC valid, no independent record
Check digit passes; no third-party database record found yet. Coverage gaps are common — not a strike.
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 0.01 g listing number equals Thiamin (as Thiamin HCI) 5 mg + Riboflavin 5 mg. What lot-specific document confirms those declared amounts?
The panel resolves what the headline number includes. The remaining question is whether the product in hand matches those declared amounts; ask for a lot-specific certificate of analysis.
2
Can you send the certificate of analysis (COA) for the lot number on my bottle?
A real COA names the testing laboratory, the test date, the lot it covers, and what was measured. “Third-party tested” with no document behind it is a marketing sentence.
3
Which specific study supports this claim — and was it run on this exact formula?
Ask for the citation, how many people took part, the dose used, and whether the study tested this product or just one ingredient in it. Ingredient research is not product evidence.
4
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.
5
Where are the ingredients sourced, and where is the product manufactured?
“Made in USA” can describe only the final bottling step. Ask which country the actives came from and whether the facility is audited.
6
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 732940942897.
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.
Record built July 24, 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.