Everything DoseRank tracks on the nail tools shelf — Myo-Inositol. The category itself is never ranked: 17 products get scored the moment you say what you want them to do.
How to read the scores
This legend covers the scores on this page — for data sources, scoring weights, and limits, read the full methodology →
Answer a few questions about your goals, habits, stack, and budget. Then, DoseRank will find the products that best match your needs based on your answers. It's free and only takes 60 seconds! No account is required.
A saved, shareable breakdown: your matched products, dose math, interaction flags to discuss with a clinician, and a price-tracked stack you can revisit.
Questions
Each product gets a composite score blending clinical strength, evidence, dose fit, trust and value — computed for the goal you picked, across this category's products. The #1 on the DoseRank tab has the highest composite; the other tabs re-rank the same products by Value, Trust, or Popularity. Placement is never paid.
Start with a goal, not a brand
Browsing nail tools supplements without a goal makes no sense — different products do different jobs, and “best” flips depending on which job you're hiring for. These are the 45 health outcomes that matter for this category. Pick yours, and the full evidence-ranked shelf loads for that goal alone.
Pregnancy rateFrequency of achieved pregnancies.2 rankedModerate-strong
IrritabilityLow threshold for frustration or anger.3 rankedLimited
PCOS symptom burdenClinical burden of polycystic ovary syndrome symptoms.4 rankedStrong
Menstrual regularityMore predictable and regular menstrual cycles.3 rankedStrong
Fasting insulinBaseline insulin concentration.3 rankedStrong
OvulationOccurrence and quality of ovulatory cycles.3 rankedStrong
Eye strainVisual fatigue or discomfort from eye use.2 rankedModerate-strong
Acne severityExtent or intensity of acne lesions.6 rankedModerate-strong
Contrast sensitivityAbility to distinguish shades or low-contrast details.1 rankedStrong
Visual acuityClarity or sharpness of vision.1 rankedModerate-strong
Congenital anomalyStructural or functional birth defect.3 rankedStrong
Insulin resistanceReduced response to insulin associated with metabolic disease.5 rankedStrong
Vitamin D statusBiochemical sufficiency of vitamin D.8 rankedStrong
Macular pigment optical densityRetinal pigment measure sometimes used in lutein/zeaxanthin studies.1 rankedStrong
Night vision or dark adaptationAbility to see or adapt under low-light conditions.3 rankedLimitedNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best nail tools supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 17 products against that goal's trials.