Primary guides, page 2 of 7
Older guides from the library, newest first. Page 1 and the curated starting paths are on the blog hub.
Primary Library
Primary guides, page 2
These are the main reads worth keeping in rotation. Start with the guide that matches your current question, then branch into the supporting timelines only when you need them.
Showing 21 to 40 of 124 guides.
How Many Reference Points You Need for a Reliable Hair Loss Baseline
If your baseline feels too thin or too overwhelming, this guide breaks down the minimum number of reference points needed for reliable comparisons.
Build a baseline with enough reference points to support honest comparisons
Hair Diary vs Photo Log: Which Tracking Format Catches Trends First
If you are choosing between a written diary and a photo log, this guide shows what each format catches first and how to pair them without overload.
Choose a tracking format that surfaces real trend changes sooner
Terminal-to-Vellus Hair Ratio: The Metric Trichoscopists Actually Measure
Hair count tells you how much you have. Density tells you how packed it is. The terminal-to-vellus ratio tells you what kind of hair is left. It is the metric that detects pattern baldness years before the others.
Understand the terminal-to-vellus hair ratio, why it is the most sensitive early marker of androgenetic alopecia, and how to interpret trichoscopy results that report it
Hair Loss After COVID: Recovery Timeline and What to Track
COVID-triggered hair shedding is one of the most common post-infection complaints. Here's when it starts, how long it lasts, and how to track your recovery.
Understand post-COVID telogen effluvium timeline and track recovery objectively
Hair Loss Genetics: Can You Actually Predict Balding?
Your genetics load the gun, but your timeline pulls the trigger. Here's what we actually know about predicting hair loss from family history.
Understand what genetics can and cannot predict about your hair loss and start monitoring early
Hair Miniaturization: What It Means and How to Spot It
Thinning hair doesn't fall out all at once. It shrinks first. Here's how to catch miniaturization before it becomes visible hair loss.
Understand hair miniaturization, identify it at home, and begin tracking before permanent follicle loss
Does Biotin Help Hair Loss? What Research Shows
Biotin is the best-selling hair supplement on the market. The clinical evidence that it helps non-deficient adults? Essentially zero.
Understand when biotin supplementation actually helps hair loss and when it wastes money
Topical vs Oral Finasteride: Results and Side Effects
Topical finasteride delivers comparable hair regrowth to oral 1mg with less systemic DHT suppression. Here is how the two forms compare and what to track.
Help users compare topical and oral finasteride on efficacy, side effects, and tracking requirements
Ozempic and Hair Loss: What the Research Actually Shows
GLP-1 drugs like Ozempic and Mounjaro can trigger hair shedding in up to 5.7% of users. Here's what clinical trials reveal and how to track it.
Understand why GLP-1 receptor agonists cause hair loss and build a tracking protocol to monitor shedding and recovery
When to Consider a Hair Transplant: The Decision Framework
Most people consider a hair transplant too early. Here's the checklist for when you're actually ready, what to do first, and how to evaluate candidacy objectively.
Evaluate hair transplant candidacy using objective criteria and tracking data
How Long Until Hair Loss Treatment Works? Realistic Timelines for Every Option
The hardest part of hair loss treatment isn't starting -- it's waiting. Here are the evidence-based timelines for every treatment, and how to track whether yours is actually working.
Set realistic expectations for treatment timelines and track response objectively
Alopecia Areata: Patches, Causes, and How to Track Regrowth
Smooth, round bald patches that appeared suddenly are almost certainly alopecia areata, not pattern baldness. Here's how to track regrowth and know when to escalate treatment.
Understand alopecia areata, distinguish it from other hair loss, and track regrowth patches
Hair Loss and Anxiety: How to Track Progress Without Spiraling
Checking your hair every day feeds the anxiety loop. A structured tracking protocol (weekly photos, monthly comparisons, defined intervals) gives you real data and breaks the spiral.
Replace compulsive hair checking with a structured, anxiety-reducing tracking routine
Hair Loss After Weight Loss: Why Crash Diets Cause Shedding
Lost 20 pounds and now losing hair too? Rapid caloric restriction is one of the most common triggers for telogen effluvium. Here's the timeline and how to recover.
Understand why weight loss causes shedding and track recovery while maintaining progress
Stress and Hair Loss: How to Tell If Cortisol Is Causing Your Shedding
Hair loss from stress is real, temporary, and trackable. Here's how cortisol pushes follicles into the resting phase and what your shedding pattern reveals about the cause.
Distinguish stress-induced hair shedding from pattern baldness and track recovery
Birth Control and Hair Loss: Which Pills Cause Shedding
Not all birth control affects your hair the same way. Androgenic progestins can trigger shedding, while anti-androgenic pills can protect against it. Here's what to track.
Identify which birth control hormones affect hair and track changes when starting or stopping
Hair Loss and Sleep: How Poor Sleep Affects Hair Growth
Your hair follicles repair during deep sleep. Chronic sleep deprivation disrupts that cycle, raises cortisol, and can push follicles into the resting phase.
Understand how sleep quality affects hair health and track both together
Does Weightlifting Cause Hair Loss? What Research Shows
The gym-hair loss connection is one of the most persistent myths in fitness. Here's what actually happens to your hormones when you lift, and why it doesn't matter for your hair.
Separate gym myths from evidence and track whether exercise affects your hair
Seasonal Hair Loss: Why You Shed More in Fall (and When to Worry)
Shedding more than usual in September? You're not imagining it. Seasonal hair loss is biologically real and usually resolves by winter. Here's when it's normal and when it isn't.
Distinguish seasonal shedding from pathological hair loss using tracking data
Vitamins for Hair Loss: What Actually Works (and What Doesn't)
Most hair supplements waste money. Here's what the clinical evidence says about which vitamins matter, which don't, and how to track whether they're working for you.
Identify which vitamin deficiencies cause hair loss and track supplement response
