The notebook, one question per entry
Each entry takes one question people search about hair supplements and answers it from the studies, labels and fact sheets behind it, with the date we read them. Start with the lead entry, or go straight to the Nutrafol review.
Is Nutrafol Worth the Monthly Cost?
A year of Nutrafol Men runs from $844 to $1,056 at list price. What that buys in evidence, what the same money could cover first, and a way to decide that does not depend on hope.
Viviscal vs Nutrafol: Ingredients, Evidence and Cost
A marine-protein tablet against a botanical blend. Both have small placebo-controlled trials paid for or written by their makers; they differ on ingredients, allergens and price by about half.
Biotin for Hair Loss: When It Helps, and the Lab-Test Warning
Biotin's reputation rests on people who were short of it. Here is what the evidence shows for everyone else, why the FDA warns about biotin and blood tests, and how biotin sits inside multi-ingredient hair supplements.
Saw Palmetto vs Finasteride for Hair Loss
One is a plant extract sold as a supplement, the other a prescription medicine approved for male pattern hair loss. The one head-to-head study, what it found, and why the comparison is not like for like.
Iron, Ferritin and Vitamin D: Get Tested First
Low iron and thyroid problems can cause hair loss, and they need a diagnosis, not a hair capsule. Why a blood test comes before a supplement, what ferritin tells a doctor, and where vitamin D fits.
How Hair Supplements Are (Not) Regulated in the US
No FDA approval before sale, a standard disclaimer, advertising rules from the FTC and certification marks that test purity, not results. What each layer does, and what it leaves to you.