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Hair Loss Guides.
Based on evidence.

85+ guides on tracking, treatment decisions, and reading your own data - built on one principle: establish a baseline before drawing any conclusion.

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Featured Guide

How to Track Hair Loss: Photos, Scores & Decisions

A practical tracking routine: consistent photos, simple zone ratings, a 12-week plan with three comparison blocks, what context to log, and when to rebaseline.

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Latest Research

Evidence Review·Sep 8, 2026

VDPHL01: What the Extended-Release Oral Minoxidil Trials Show

VDPHL01 is minoxidil in a slow-release tablet, not approved anywhere. Where its three trials stand, and the five things to have a baseline for.

Tracking·Sep 8, 2026

Semaglutide, GLP-1 Medications, and Hair Loss: What to Track

Shedding after starting semaglutide or tirzepatide usually tracks the weight loss rather than the drug. Timelines, warning signs, and what to record.

Treatments·Sep 8, 2026

Clascoterone for Hair Loss: How the Topical Anti-Androgen Works

Clascoterone blocks androgen receptors locally without systemic effects. Here is the mechanism, clinical data, FDA status, and how it compares to finasteride.

Treatments·Sep 8, 2026

Pyrilutamide for Hair Loss: The Investigational Topical Anti-Androgen

Pyrilutamide (KX-826) is a topical androgen receptor antagonist in Phase III trials. Here is the mechanism, clinical data, and realistic availability timeline.

Evidence Review·Aug 8, 2026

Seasonal Hair Shedding: Why Autumn Sheds More, and How to Tell It From Balding

Human hair sheds on a seasonal rhythm that peaks in autumn. Here is how to tell a shed that resolves from pattern loss that does not, and what to measure.

Evidence Review·Aug 8, 2026

Does Hair Dye or Bleach Cause Hair Loss? Breakage vs Shedding

Bleach damages the hair shaft but does not reach the follicle. Here is how to tell breakage from shedding by eye, and when dye genuinely causes hair loss.

Diagnosis·Jul 29, 2026

Telogen Effluvium vs Male Pattern Baldness: What to Track for 8 Weeks

Telling temporary shedding from pattern loss: the 90-day trigger lag, an 8-week tracking protocol, recovery signs, and the patterns that are neither and need a clinician.

Tracking·Jul 29, 2026

How to Compare Before/After Hair Photos Without Bias

The full capture and comparison protocol: which camera and distance to lock, crown angles, lighting, how haircuts and travel fake a change, and how to photograph scalp symptoms.

Routines·Jul 29, 2026

What to Track Before Changing Your Hair Routine

How to change one thing at a time and still learn something: baseline locking, shampoo and scalp-treatment switches, brand changes, and medicated shampoos.

Diagnosis·Jul 29, 2026

When to See a Dermatologist for Hair Loss Red Flags

Red flags that mean see a dermatologist sooner, what to put on a one-page summary so a 15-minute appointment produces decisions, and when blood tests actually help.

Evidence Review·Jul 19, 2026

Sugar, a High-Glycemic Diet, and Hair Loss: What the Evidence Says

No good evidence that sugar causes baldness. The insulin resistance association, and the one dietary change that really does trigger shedding.

Tracking·Jul 19, 2026

Ashwagandha and Hair Loss: Cortisol, Stress, and What to Track

Ashwagandha may lower cortisol, but no strong trial shows it regrows hair. Learn the stress-shedding link, why it won't help pattern loss, and what to track.

Evidence Review·Jul 7, 2026

Niacinamide for Hair Loss: What the Evidence Actually Shows

Review the limited human evidence for niacinamide and hair loss, its plausible scalp benefits, where it may fit, and how to track any change.

Tracking·Jul 1, 2026

How to Track Hair Loss With Curly or Coily Hair

Learn how to standardize hair state, lighting, angles, and part lines so progress photos are more comparable for curly and coily hair.

Tracking·Jul 1, 2026

Traction Alopecia: How to Track Recovery

Traction alopecia may recover when tension stops before scarring. Learn warning signs, evaluation steps, and how to track regrowth over time.

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Browse by topic

Tracking

Learn how to build repeatable hair-photo protocols, set useful baselines, compare stable time windows, and review progress with less visual noise.

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Treatments

Explore evidence-aware treatment timelines, adherence tracking, decision frameworks, safety questions, and ways to document visible response over time.

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Fundamentals

Understand hair biology, growth cycles, common loss patterns, essential terminology, and the tracking principles behind useful comparisons.

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Diagnosis

Compare common hair-loss patterns, recognize warning signs, prepare useful questions, and organize photo evidence for a professional evaluation.

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Routines

Build consistent hair-care, nutrition, lifestyle, and photo-capture habits while separating routine changes from meaningful density trends.

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Surgery

Plan and document hair-transplant decisions, costs, recovery milestones, shedding phases, and long-term progress with consistent photo records.

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Evidence Review

Review the evidence behind popular ingredients, supplements, devices, and emerging hair-loss claims, with practical limits and safety context.

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