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BoldHeader Lab is an independent editorial team informed by hair-transplant clinic marketing experience. Articles written or reviewed by clinicians are identified separately. About our editorial approach

  • Sep 26 2026

When Does Finasteride Start Working? A 3-, 6-, and 12-Month Timeline

Finasteride 1 mg is not a treatment whose hair-growth effect can be judged after days or weeks. Its prescribing informa…

  • Sep 18 2026

Can Low Iron Cause Hair Loss? Understanding Ferritin Tests

Iron deficiency can be one possible contributor to diffuse hair shedding. But hair loss does not mean you are iron defi…

  • Sep 15 2026

Do Finasteride and Dutasteride Affect Libido or Erections?

Some men do notice lower libido, difficulty getting an erection, or changes in ejaculation after starting finasteride o…

  • Sep 14 2026
  • Sep 18 2026

Finasteride vs Dutasteride for Hair Loss: 2026 Evidence

Finasteride and dutasteride can both improve male androgenetic alopecia. Dutasteride has produced larger average gains …

  • Sep 14 2026
  • Sep 18 2026

Does PRP Work for Hair Loss? PRP vs i-PRF vs CGF

PRP injections may improve hair density in some people with male or female pattern hair loss, but the evidence does not…

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