“Biotin 6 mg per serving”
Evidence →The label promises 6 mg per serving. The panel says 6 mg. They match.
Exact product checked · GTIN 00074312016295Nature's Bounty Optimal Solutions · checked Jul 26, 2026 · on sale since Oct 3, 2024
Quick read · Nature's Bounty Optimal Solutions
Nature’s Bounty Optimal Solutions Advanced Hair
Checked against public sources on July 26, 2026 · LookCloser does not sell or recommend supplements.
Does the marketing hold up?
Listed contents barely fit the format’s physics The listed contents leave too little room for the serving itself, or exceed its stated mass. At least one label number needs an explanation.
Is the dose real?Panel read — dose not verified9 ingredients listed; no advertised amount we could confirm against them
What a serving costs$0.35per serving, at the checked price
Is it tested?No testing claim made
Who’s behind it?No exact match in USPTO — see checks below
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.
1✓ checked outno contradictions · no recalls
Marketing claims, checked
The checks, one by one
1 promise checks out against the label or linked source.
✓Checks out1
Quick read · 6 useful findings
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
Needs explanationIs the label honest?
Listed contents barely fit the format’s physics
The listed contents leave too little room for the serving itself, or exceed its stated mass. At least one label number needs an explanation.
Evidence and sources
Listed contents total at least 4 g per 4-gummy serving: 0 g of major actives plus 4 g carbohydrate. A typical pectin gummy is assumed here to weigh 2.5–3.5 g, making a 4-gummy serving roughly 10–14 g. …
Locked evidence record →Open the full source-linked findingChecks outIs the label honest?
Listing claim matches the Supplement Facts panel
The label promise and the Supplement Facts amount agree.
Evidence and sources
The listing claims 6 mg; the photo-read Supplement Facts panel shows Biotin at 6 mg per serving — the listing text and its photo-read panel agree; this is internal consistency, not independent testing.
Locked evidence record →Open the full source-linked findingChecks outIs the label honest?
Every ingredient shows its amount · 9 ingredients listed.
Every ingredient shows its real amount — nothing is hidden in a proprietary blend.
Evidence and sources
The panel gives a per-ingredient amount rather than hiding quantities inside a proprietary blend, so each one can be compared to published research.
Locked evidence record →Open the full source-linked findingChecks outWho is behind it?
The barcode identity checks out · 074312016295.
The barcode matches, so we are checking the right product rather than a look-alike.
Evidence and sources
Open Food Facts resolves 074312016295 to "HAIR, SKIN & NAILS GUMMIES" (NATURE'S BOUNTY) — consistent with this listing.
Locked evidence record →Open the full source-linked findingChecks outWho is behind it?
Registered in NIH's supplement label database (DSLD)
A government label filing makes the listed formula easier to inspect and compare over time.
Evidence and sources
Label #62846 “Hair, Skin & Nails Gummies With Biotin Strawberry Flavored” (Nature's Bounty Optimal Solutions), entered 2016-07-25, with the full Supplement Facts on file — see the panel below. NIH marks this label as off-market (superseded or discontinued version). …
Locked evidence record →Open the full source-linked findingChecks outCan you trust the review pattern?
Reviews rose from 346 to 437 between February 6 and July 14, 2026 — no sudden jump.
A count that moves steadily is ordinary. A sudden burst is what deserves a closer look.
Evidence and sources
Written reviews rose from 346 to 437 between February 6 and July 14, 2026. The largest rise inside any single 30-day window was about 15, so the count moved in steps rather than in one burst.
Locked evidence record →Open the full source-linked findingWhat remains open 2
- No FDA recall matched this brand in the current search.
- Brand ownership is not settled in this record.
These are evidence gaps, not strikes against the product.
Where it sells
Price check for this exact product
Amazon
Exact UPC/GTIN match$34.79
$0.35 per labeled serving
matching UPC/GTIN · checked Jul 26, 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 ↗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.
Record built July 26, 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.