Calcium
Bone mineral with no documented hair-loss role. Filler in multivitamin-style hair supplements.
How Calcium works — and how well we know it
Bone mineral and intracellular signaling ion. No documented role in hair follicle biology beyond generic cellular processes.
oral
1,000–1,200 mg/day (RDA).
Dietary supplement, primarily marketed for bone health. RDA 1,000–1,200 mg/day.
Nothing AGA-specific.
Evidence distribution across 1 claims
Why the grade is F. No AGA evidence of any kind. Inclusion in hair supplements is multivitamin filler.
Every claim, traced back to its source
We took every major claim made about Calcium and matched it to the specific experimental model behind it. Click a claim to see the model, the finding, and our assessment of how much weight it deserves.
1 claims · evidence-by-evidence breakdown
1Open-LabelWeight: LowNo AGA evidence; bone-mineral framing doesn't transfer to hairNo evidence.
Absence of evidence in indexed databases.
No AGA trials of calcium supplementation.
Pure multivitamin filler. Belongs in a calcium-for-bones supplement, not in a hair product.
What's still missing from the science
- Any.
Our verdict on Calcium
Not in our formulary yet
We don't carry this ingredient. We only formulate around actives where the evidence — and the safety profile — is strong enough to recommend with confidence. As the data matures, we may revisit.
Related treatments
How does Calcium stack up against its closest peers?
A genuine cause of reversible hair shedding in iron-deficient patients — but useless and potentially harmful if your iron stores are normal.
Read the breakdown →A botanical 5-alpha reductase inhibitor whose only high-quality trials (in BPH) showed no benefit over placebo; the positive AGA data are small and low-quality.
Read the breakdown →One small Malaysian RCT showed a hair-count increase. Never replicated. Used by Nutrafol to justify its tocotrienol content.
Read the breakdown →