“Biotin 2 mg per serving”
Evidence →The label promises 2 mg per serving. The panel says 2 mg. They match.
Exact product checked · GTIN 00074312016318Nature'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 Hair
Checked against public sources on July 26, 2026 · LookCloser does not sell or recommend supplements.
200gummies · 100 servings
Does the marketing hold up?
Every ingredient shows its amount · 9 ingredients listed. Every ingredient shows its real amount — nothing is hidden in a proprietary blend.
Is the dose real?✓Listing and panel agreeboth say 2,500 mcg of Biotin
What a serving costs$0.16per 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.
2✓ checked out1◖ partly confirmedno contradictions · no recalls
Marketing claims, checked
The checks, one by one
2 promises check out. 1 could not be fully confirmed from public sources.
✓Checks out2
“Collagen 100 mg per serving”
Evidence →The label promises 100 mg per serving. The panel says 100 mg. They match.
◐Partly confirmed1
“CITRUS FLAVORED DIETARY SUPPLEMENT Helps Support Beautiful Hair, Glowing Skin, and Healthy”
Evidence →Ingredient evidence exists; on dose: label claims 100 mg/serving — below the range commonly used in research (trials use 2.5–15 g/day of hydrolyzed peptides).
Ingredient research can support context, but it is not a trial of this exact product.
Quick read · 2 useful findings
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
Checks 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 outCan you trust the review pattern?
Reviews grew steadily — about 75 between January 28, 2026 to July 18, 2026, with no sudden spike.
Gradual growth is more ordinary. A sudden burst deserves a closer look.
Evidence and sources
Written reviews grew from 179 to 249 across 2026-02-07 – 2026-07-18 with no single manufactured spike (largest 30-day gain ~18).
Locked evidence record →Open the full source-linked findingWhat remains open 4
- No matched to this exact product public label filing is saved in this record.
- No FDA recall matched this brand in the current search.
- Brand ownership is not settled in this record.
- Barcode checksum is valid; no independent product record was found.
These are evidence gaps, not strikes against the product.
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 100 mg of collagen peptides per serving. Studies we found used 2.5 g–15 g a day, so this sits below that range.
0studied 2.5 g–15 g
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
Amazon
Exact UPC/GTIN match$15.76
$0.16 per labeled serving
matching UPC/GTIN · checked Jul 26, 2026
View on Amazon ↗iHerb
Not confirmedNo exact listing saved
Search results remain not linked to this exact product until this retailer publishes the matching UPC/GTIN.
Search iHerb ↗Target
Not confirmedNo exact listing saved
Search results remain not linked to this exact product until this retailer publishes the matching UPC/GTIN.
Search Target ↗Walmart
Not confirmedNo exact listing saved
Search results remain not linked to this exact product 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.
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.