Hair loss and scalp health, read against the evidence

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Hairline Journal

Hairline Journal: Hair loss and scalp health, read against the evidence

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Hair loss basics

New to the subject? These three questions are a good place to begin. Each one links to the post that answers it in full, with sources.

  1. Open hand holding loose strands of hair beside a comb 01 How many hairs a day is normal to lose? Telogen Effluvium: Hair Shedding After Illness, Stress, Childbirth or Diet
  2. Woman with curly hair brushing it while looking closely into a bathroom mirror 02 Why does my part look wider than it used to? Female Pattern Hair Loss: Signs, Causes, Diagnosis and Treatment
  3. Young man lifting the hair at his forehead to look at his hairline 03 Which hair loss medicines are approved, and how long do they take? Minoxidil and Finasteride: How They Work, Side Effects and Who Should Avoid Them

Hair loss

Pattern hair loss in women and men, how a dermatologist diagnoses it, and how it is told apart from temporary shedding.

4 posts in hair loss

Treatments

What the studies say about the treatments people ask about most, including how long they take and what they can realistically do.

3 posts in treatments

Shedding

How many hairs a day is ordinary, what sudden shedding tends to mean and how long it usually takes to settle.

Woman in a bathrobe parting her hair with her fingers to look at her roots in a mirror Telogen Effluvium: Hair Shedding After Illness, Stress, Childbirth or Diet Telogen effluvium causes heavy shedding months after illness, stress, childbirth or dieting. Learn the usual timeline, when hair recovers and which tests help. 23 October 2026

Scalp care

Washing, flaking, itching and the everyday habits that matter for the skin the hair grows from.

Hands working a wide brush through a section of coily black hair Dandruff vs Seborrheic Dermatitis: Differences, Causes and Medicated Shampoos Dandruff and seborrheic dermatitis sit on one spectrum. Learn how they differ, how Malassezia yeast and scalp oil drive them and which shampoo ingredients help. 31 October 2026
Black and white close-up of a comb drawing a clean parting through dark hair
Photo: Sự Minh / Pexels

About the journal

Written and checked by the editors

Hairline Journal is a small, independent blog about hair loss and scalp health. We read the guidelines, reviews and trials so that each post can say plainly what is known, what is not, and when it is worth seeing a doctor.

Every post is written and checked by the editors against its sources, which are numbered at the end. We are not a clinic and we do not sell treatments or products.

How we research each post