Increase hair growth or density

What this outcome means

Hair growth or density is about how much hair you keep and grow across your scalp, reflected in thickness, coverage, and how full your hair looks. On DoseRank it maps to a defined health outcome built from human studies on hair count per area, terminal hair density, and growth rate – data sourced from open sources and specialized resources. DoseRank is not medical advice.

Who it's for

Thinning on topScalp showing more as crown or part-line coverage fades.

Slow-growing hairHair that seems to inch along no matter what you do.

Postpartum regrowthNew parents rebuilding fullness after pregnancy-related shedding settles.

Stack buildersAlready taking supplements such as Saw Palmetto and want the dose right.

Evidence level

60Limited

Evidence score is low, which means that there is not enough data to support the effectiveness of this outcome. However, we will continue to monitor the research and update our recommendations as new information becomes available.

Thin ingredient signal

Saw Palmetto is the best available ingredient signal for this outcome, but the evidence is still thin.

Dose matchedDoseFit 92

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: Above range: Saw Palmetto 540 mg vs 320-320 mg.

Processed

1.2k

Available

1.2k

Ingredients

Brands

208

Coverage

100%

How to read the scores

What every metric means

Each score is 0–100. Higher is better for every metric below.

CompositeThe overall DoseRank score — a weighted blend of clinical strength, evidence, dose fit, trust and value.Higher is better

ClinicalHow strongly the formula's ingredients and doses match what clinical studies used for this outcome.Higher is better

EvidenceHow much published human research backs the formula's key ingredients for this outcome — both how many studies exist and how strong they are.Higher is better

ValueHow the price per serving compares with similar products for this outcome — 50 is the typical price, higher means better value for your money.Higher is better

TrustHow well customers rate this product, with extra weight given to ratings backed by a large number of reviews.Higher is better

PopularityHow strongly this product sells compared with the other ranked products for this outcome.Higher is better

This legend covers the scores on this page — for data sources, scoring weights, and limits, read the full methodology →

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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

Frequently asked

Each product gets a composite score blending clinical strength, evidence, dose fit, trust and value. 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.

Increase hair growth or density

What this outcome means

Who it's for

Thinning on topScalp showing more as crown or part-line coverage fades.

Slow-growing hairHair that seems to inch along no matter what you do.

Postpartum regrowthNew parents rebuilding fullness after pregnancy-related shedding settles.

Stack buildersAlready taking supplements such as Saw Palmetto and want the dose right.

Evidence level

60Limited

Thin ingredient signal

Saw Palmetto is the best available ingredient signal for this outcome, but the evidence is still thin.

Dose matchedDoseFit 92

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: Above range: Saw Palmetto 540 mg vs 320-320 mg.

Processed

1.2k

Available

1.2k

Ingredients

Brands

208

Coverage

100%

Relevant ingredients

Which ingredient types matter for hair growth or densityOpen to see which ingredient types matter for hair growth or density

674 products across 4 ingredient types — open to filter the ranking.

Use types to filter ranked products

Botanicals/Herbal Extracts

470 products

Concentrated plant and herbal extracts standardized to actives. Potency depends on the extract ratio and marker content, not raw weight.

Typical: ,

Vitamins

143 products

Essential micronutrients the body can't make in sufficient amounts. Fat-soluble ones (A, D, E, K) store up; water-soluble ones need regular topping-up.

Typical:

Proteins & Peptides

54 products

Whole proteins and shorter peptide chains for muscle, recovery and structure. Quality comes down to amino acid profile and digestibility, not grams alone.

Typical:

Structural & Connective Tissue Compounds

7 products

Building blocks for joints, skin and tendons – collagen, glucosamine, hyaluronic acid. Support tissue repair over months, not days.

Typical:

Top decision cards

Best products for hair growth or density

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for hair growth or density

Swanson Vitamins, Full Spectrum® Saw Palmetto, 540 mg, 250 Vegan Capsules

Swanson Vitamins$0.07 / serving4.7 · 4,206Available now

Why this ranks here

Evidence fitEvidence is still thin for Saw Palmetto.
Dose fitDose-range data is not available for this formula yet.
Price / serving$0.07 per serving — low price tier for this outcome.
AvailabilityIn stock across major retailers; 99% availability confidence.
TrustStrong trust signals — consistently high marks from verified buyer ratings.

Trade-offs

Evidence depth trails the rest of this list

The numbers

540 mgThin evidenceevidence for this ingredient is still thin

Compare top 3 Product data Open at retailer

The rest of the ranking · DoseRank

Top 10 ranked products