“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.

Zhou Hairfluence Supplement
Checked against public sources on July 26, 2026 · LookCloser does not sell or recommend supplements.
Does the marketing hold up?
Every ingredient shows its amount · 14 ingredients listed. Every ingredient shows its real amount — nothing is hidden in a proprietary blend.
“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.
What the Supplement Facts panel says
| Vitamin C (as Ascorbic Acid) | 100 mg |
|---|---|
| Vitamin D3 (as Cholecalciferol) | 10 mcg |
| Thiamine (B1) (as Thiamine HCI) | 5 mg |
| Riboflavin (B2) (as Riboflavin) | 5 mg |
| Niacin (B3) | 5 mg |
| Vitamin B6 (as Pyridoxine HCI) | 6 mg |
| Folate (200 mcg Folic Acid) | 340 mcg DFE |
| Vitamin B12 (as Methylcobalamin) | 20 mcg |
| Biotin (from Magnesium Biotinate and Biotin) | 15,000 mcg |
| Pantothenic Acid (from Calcium d-Pantothenate) | 50 mg |
| Lustriva® (Inositol-stabilized Arginine Silicate, Magnesium Biotinate) | 160 mg |
| Keranat™ Vegan Keratin Blend: Millet (Panicum miliaceum) Seed Oil, Sunflower (Helianthus annuus) Seed Oil, Wheat (Triticum vulgare/aestivum) Grain Extract, Rosemary (Rosmarinus officinalis) Leaf Extract | 300 mg |
| MSM (Methylsulfonylmethane) | 400 mg |
| Bamboo (Bambusa vulgaris) (stem extract) (Supplying 15 mg Silica [70%]) | 20 mg |
Printed on the package: VEGAN · NON-GMO · LAB VERIFIED · GOOD MANUFACTURING PRACTICE · GMP · CONSISTENT QUALITY · NON-GNO
We read 14 lines from the package photograph. It is our transcript of the label, not the manufacturer’s panel, and it may be incomplete.
The checks, one by one
1 promise needs a closer look.
◐Partly confirmed2
Published research exists for ingredients in this formula. Whether this product’s doses match those studies could not be confirmed.
Ingredient research can support context, but it is not a trial of this exact product.
△Claimed without support found1
We found no named, citable study of this product or formula. The claim may rest on ingredient research rather than a trial of this product.
?Couldn’t verify independently1
“Made in USA” can describe only final bottling. Ingredient-sourcing records were not located for this product.
We looked and found no public proof. That does not count against the product.
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
Every ingredient shows its amount · 14 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 findingWhat remains open 1
- No FDA recall matched this brand in the current search.
These are evidence gaps, not strikes against the product.
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.
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 15 mg of magnesium per serving. Studies we found used 200 mg–420 mg a day, so this sits below that range.
Study ranges differ between trials and change as research changes. This is background reading, not a pass, a failure, or a recommendation.
Where you can check or buy it
Only the submitted seller page is identity-certain. Other destinations are shown as leads until a shared UPC/GTIN confirms the exact product.
Amazon
Submitted listingLowest New observed via Keepa on 2026-07-27.
View on Amazon ↗iHerb
Not confirmedNo matching product page was confirmed in the current record. Search results cannot be attached as this product until the UPC/GTIN matches.
Search iHerb ↗Target
Not confirmedNo matching product page was confirmed in the current record. Search results cannot be attached as this product until the UPC/GTIN matches.
Search Target ↗Walmart
Not confirmedNo matching product page was confirmed in the current record. Search results cannot be attached as this product until the UPC/GTIN matches.
Search Walmart ↗Prices and stock are point-in-time observations. Related pages are never used as product evidence. No affiliate links; LookCloser earns nothing from these sellers.
Want the complete evidence trail?
The summary stops at product-specific facts. The full report preserves every source, calculation, limitation, and unresolved check for review or sharing.
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.