Everything DoseRank tracks on the hair, skin & nails formulas shelf — Saw Palmetto, Keratin and Silica. The category itself is never ranked: 309 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 hair, skin & nails formulas supplements without a goal makes no sense — saw palmetto, keratin and silica 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.
Hair growth or densityIncrease or preservation of scalp or body hair.134 rankedModerate-strong
Wrinkle severityDegree of visible skin wrinkling.110 rankedStrong
Fluid retention or edemaAbnormal accumulation of fluid in tissues.122 rankedModerate-strong
Nail brittlenessFragility or easy breakage of nails.193 rankedModerate-strong
Skin elasticityAbility of skin to stretch and recoil.174 rankedStrong
Nail strengthResistance of nails to splitting or breaking.166 rankedLimited
Biotin statusBiochemical sufficiency of biotin.164 rankedStrong
Hair shedding or lossExcess hair loss relative to normal cycling.177 rankedLimited
Skin hydrationMoisture content or hydration of the skin.128 rankedStrong
Skin aging signsVisible features such as fine lines, wrinkles, or loss of firmness.107 rankedModerate-strong
Joint stiffnessReduced ease of joint movement, especially after rest.101 rankedModerate-strong
Zinc statusBiochemical sufficiency of zinc.122 rankedStrong
Joint functionAbility of joints to move and support normal activity.116 rankedStrong
Choline statusAdequacy of choline availability.69 rankedStrong
Dry eye symptomsIrritation, burning, or dryness of the eyes.76 rankedStrongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best hair, skin & nails formulas supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 309 products against that goal's trials.