Everything DoseRank tracks on the hair, skin & nails shelf — Collagen Peptides and Silica. The category itself is never ranked: 1.4k 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 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.
Wrinkle severityDegree of visible skin wrinkling.620 rankedStrong
Skin elasticityAbility of skin to stretch and recoil.836 rankedStrong
Nail brittlenessFragility or easy breakage of nails.802 rankedLimited
Skin hydrationMoisture content or hydration of the skin.683 rankedStrong
Joint stiffnessReduced ease of joint movement, especially after rest.515 rankedStrong
Nail strengthResistance of nails to splitting or breaking.583 rankedLimited
Biotin statusBiochemical sufficiency of biotin.484 rankedStrong
Joint functionAbility of joints to move and support normal activity.557 rankedStrong
Skin aging signsVisible features such as fine lines, wrinkles, or loss of firmness.356 rankedModerate-strong
Hair shedding or lossExcess hair loss relative to normal cycling.534 rankedLimited
Range of motionExtent of achievable joint movement.193 rankedModerate-strong
Joint painPain arising from joints or periarticular tissues.820 rankedStrong
Dry eye symptomsIrritation, burning, or dryness of the eyes.327 rankedStrong
Immune toleranceBalanced immune regulation without excessive reactivity.166 rankedLimited
Hair growth or densityIncrease or preservation of scalp or body hair.231 rankedModerate-strongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best hair, skin & nails supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 1.4k products against that goal's trials.