The whole corpus
All 79 guides
234,000 words across eight subjects, drawn from 92 distinct papers. Every guide ends with its sources, and every citation is a live link to the paper itself.
Conditions 10
What is actually causing the shedding — and how each type behaves.
- Androgenetic Alopecia: Complete GuideAndrogenetic alopecia affects 50% of men by 50 and 75% of women over 65. Learn causes, diagnosis (98% accurate trichoscopy), treatments with 83-87% re
- Telogen Effluvium: Causes and Recovery TimelineTelogen effluvium causes sudden hair shedding 2-3 months after stress. 95% recover fully within 6 months. Learn triggers, timeline, and when to expect
- Alopecia Areata: Types, Treatment, and OutlookAlopecia areata causes patchy hair loss when immune cells attack follicles. 30-50% recover spontaneously. Learn about JAK inhibitors, types, and progn
- Traction Alopecia: Prevention and TreatmentTraction alopecia affects 1 in 3 Black women who wear tight hairstyles. Learn to spot early warning signs before damage becomes permanent. Prevention
- Diffuse Thinning vs. Pattern Baldness: How to Tell the Difference (2026 Guide)Is your hair thinning all over or in a pattern? Learn to tell the difference between diffuse thinning, DUPA, and pattern baldness. Critical for transp
- Frontal Fibrosing Alopecia: Complete Guide to Symptoms, Causes & Treatment (2026)Frontal fibrosing alopecia causes permanent hairline recession and eyebrow loss. Learn symptoms, treatment options, and why early diagnosis matters fo
- Scarring Alopecia Types and Management: Complete GuideScarring alopecia permanently destroys hair follicles. Learn about LPP, CCCA, FFA, diagnosis with trichoscopy, and treatments to stop progression earl
- Hair Loss After COVID: What Research ShowsCOVID-19 triggers hair loss in 24-85% of patients 2-3 months after infection. Learn why it happens, how long it lasts, and what helps recovery.
- Stress-Related Hair Loss: Complete Recovery GuideStress triggers hair loss through cortisol and HPA axis activation. Learn the 2-3 month delay, 6-12 month recovery timeline, and proven management str
- Male vs Female Pattern Hair Loss: Key Differences ExplainedMale pattern hair loss involves recession and crown thinning; female pattern causes diffuse thinning with hairline preserved. Learn why treatments dif
Diagnosis & Testing 9
How hair loss is identified, which blood tests matter, and when to see a doctor.
- How to Tell If You're Going Bald: Early Signs & Self-Assessment Guide (2026)Normal shedding is 50-100 hairs/day. Pattern baldness shows temple recession, crown thinning, and hair miniaturization. Learn the Norwood scale stages
- Hair Loss Blood Tests: What to Request and Why (2026)Request CBC, ferritin (optimal >70 ng/mL), TSH, vitamin D for hair loss. Low iron found in 40% of women. Learn optimal ranges vs lab 'normal' and whic
- The Norwood Scale Explained: Find Your Stage of Hair Loss (2026)The Norwood scale has 7 stages of male pattern baldness. Stage 2 is a mature hairline (not balding). Stage 3 is first clinical loss. Learn how to self
- Ferritin and Hair Loss: Optimal Levels for Hair Growth (2026)Lab 'normal' ferritin (10-15 ng/mL) isn't enough for hair. Aim for 70+ ng/mL. Learn why 70% of female hair loss is iron-related and how to test and tr
- Thyroid Hair Loss: Complete Testing Guide + Optimal Levels (2026)50% with hyperthyroidism and 33% with hypothyroidism have hair loss. Learn which thyroid tests to request and why 'normal' TSH may not be optimal for
- Vitamin D Hair Loss: Optimal Levels + Recovery Timeline (2026)56% of hair loss patients are vitamin D deficient. Learn optimal levels (30-50 ng/mL), why D3 is 87% more effective than D2, and when to expect regrow
- When to See a Dermatologist for Hair Loss: Red Flags (2026)Losing 50-100 hairs daily is normal. Learn the red flags requiring urgent evaluation, what dermatologists do for hair loss, and when trichoscopy vs bi
- DHT and Hair Loss: Complete ExplanationDHT is 10x more potent than testosterone. Learn how 5-alpha reductase creates DHT, why genetics determine sensitivity, and how blockers like finasteri
- Tracking Hair Loss Progress: Photo GuideLearn how to track hair loss treatment progress with standardized photos every 3 months. Master the pull test, comb test, and 6-angle photo system for
Oral Treatments 10
The prescription medicines, what the trials measured, and what they cost you.
- Complete Guide to Finasteride for Hair LossFinasteride treats male pattern baldness by blocking DHT. Learn FDA-approved dosing, efficacy rates, side effects, and when to expect results in this
- Dutasteride vs Finasteride: Which Is Better for Hair Loss?Compare dutasteride vs finasteride for hair loss: efficacy data, DHT reduction (98% vs 70%), side effects, dosing, and when to switch. Evidence-based
- Oral Minoxidil for Hair Loss: Evidence-Based ReviewLow-dose oral minoxidil treats hair loss as effectively as topical. Learn dosing (1.25-5mg), efficacy rates, hypertrichosis risk, and cardiovascular s
- Spironolactone for Hair Loss in WomenSpironolactone shows 56.6% improvement in female pattern hair loss. Learn about dosing (100-200mg), timeline, side effects, and how it compares to oth
- Low-Dose Finasteride for Hair Loss: Does It Actually Work?Low-dose finasteride (0.2-0.5mg) shows 54% improvement rate vs 58% at 1mg. Learn about dosing options, DHT reduction data, and whether microdosing red
- Topical Finasteride for Hair Loss: Benefits, How to Apply, and What to ExpectTopical finasteride achieves 96% of oral efficacy with 100x lower systemic exposure. Learn application techniques, concentrations, and why sexual side
- Combining Finasteride and Minoxidil: The Complete Protocol GuideCombining finasteride and minoxidil achieves 94.1% improvement vs 80.5% alone. Learn the best protocols, timeline, and how to maximize your hair regro
- Hair Loss Medications: The Complete Comparison GuideCompare all hair loss medications: finasteride, dutasteride, minoxidil, and more. See efficacy rankings, side effects, and which treatment works best
- When to Start Hair Loss Treatment: The Complete Age & Timing GuideThe best time to start hair loss treatment is when you first notice thinning. Users starting before 30 kept 88% density. See outcomes by age and Norwo
- How Long Until Hair Loss Treatment Works? The Complete TimelineFinasteride works in 3-6 months, with 83% stopping hair loss at 12 months. See the month-by-month timeline for finasteride, minoxidil, and combination
Topicals 10
Minoxidil and everything applied to the scalp, ranked by evidence.
- Minoxidil 5% Complete Guide: How to Apply for Best ResultsApply minoxidil 5% correctly: 1mL twice daily to dry scalp, wait 4+ hours. 5% solution shows 45% more regrowth than 2%. Step-by-step application guide
- Minoxidil Foam vs Liquid: Which Works Better for Hair Loss?Foam and liquid minoxidil are equally effective (13% vs 14% regrowth). Foam causes 4x less itching—1% vs 4%. Compare side effects, cost, and applicati
- Topical Minoxidil Side Effects and How to Manage ThemMinoxidil side effects include scalp irritation (4-7%) and unwanted hair growth (15%, but 0.5% stop). Learn prevention, management, and when to worry.
- Ketoconazole Shampoo for Hair Loss: Evidence-Based GuideKetoconazole shampoo reduces scalp DHT 12-16% and matches 2% minoxidil for hair density. Learn how to use Nizoral for hair loss, 1% vs 2%, and combina
- Rosemary Oil for Hair Growth: Evidence ReviewRosemary oil matches 2% minoxidil for hair growth (18.9% vs 21.2%). Learn the clinical evidence, how to dilute (2-3%), apply correctly, and what to ex
- Microneedling with Minoxidil: Complete ProtocolMicroneedling + minoxidil outperforms minoxidil alone (95.6 vs 52.4 hair/cm²). Learn needle depth (1.0-1.5mm roller, 0.6-0.8mm pen), frequency, timing
- How to Stop Minoxidil Shedding Phase: Complete Guide (2026)Minoxidil shedding affects 17-55% of users. Learn why it's a positive sign, how long it lasts (4-8 weeks), and proven strategies to manage the dread s
- Best Topical Hair Loss Serums Compared: Evidence Review (2026)Compare hair loss serums by evidence: Minoxidil (FDA-approved), Redensyl/Procapil (64.7% satisfaction), and rosemary oil (matches 2% minoxidil). Find
- Caffeine for Hair Growth: Does It Work? Evidence Review (2026)Caffeine for hair growth: 9 studies show positive results, with 0.2% caffeine matching 5% minoxidil in one RCT. Learn the mechanism, products, and rea
- Minoxidil Once Daily: Does It Still Work? Evidence Review (2026)Minoxidil once daily works but maintains ~30% less hair than twice daily. 5% foam once daily is FDA-approved for women. Learn who should consider redu
Procedures & Devices 10
Transplants, PRP, lasers and microneedling — what the studies actually show.
- Laser Cap for Hair Loss: Complete Buyer's Guide (2026)Laser caps for hair loss: meta-analysis shows SMD 1.27 hair density increase. Compare FDA-cleared devices ($545-$3,000), see clinical results, and lea
- PRP for Hair Loss: Complete Treatment Guide (2026)PRP for hair loss: 43 RCTs show significant density improvement. Learn costs ($500-$2,500/session), timeline (3-6 months), and who responds best to tr
- Hair Transplant FUE vs FUT: Complete Comparison (2026)FUE vs FUT hair transplant: meta-analysis shows 93.6% vs 94.1% survival. Compare costs ($4-$10/graft), recovery (7-14 days), scarring, and find your b
- Hair Transplant Cost Guide: What to Budget (2026)Hair transplant costs $8,000-$15,000 in the USA (2026). Compare FUE ($6-10/graft) vs FUT ($2-6/graft), costs by state, and financing options available
- Scalp Micropigmentation: Complete Guide (2026)Scalp micropigmentation costs $2,000-$5,000 USA (2026). Learn SMP procedure, 4-6 year results, vs hair transplant comparison, and how to choose a prov
- Low Level Laser Therapy (LLLT) Evidence Review (2026)LLLT meta-analysis shows SMD 1.27 vs sham devices for hair loss. 80% real-world effectiveness. Learn wavelengths, protocols, safety data, and how LLLT
- Microneedling for Hair Loss: How to Do It Right (2026)Microneedling boosts minoxidil results by 4x per clinical studies. Learn optimal needle depth (0.5-1.5mm), weekly protocol, safety tips, and evidence-
- Hair Transplant Recovery: Week by Week Timeline (2026)Hair transplant recovery: Week 1 critical healing, shock loss weeks 2-8 (60-80% normal), new growth month 3-4, final results 12-20 months. Complete af
- Best LLLT Devices Compared: Helmet vs Comb vs Cap (2026 Buyer's Guide)Compare FDA-cleared LLLT devices: helmets ($699-$2,499), caps, and combs ($395-$899). Clinical data shows no efficacy difference between types. Find y
- When Is Hair Transplant Worth It? The Complete Decision Guide (2026)Hair transplants have 95% satisfaction at quality clinics. Learn candidacy criteria, realistic expectations, costs, and psychological impact. Decision
Scalp Health 10
The skin the hair grows out of, and the conditions that damage it.
- Scalp Care Routine for Hair Growth: Evidence-Based Guide
- Seborrheic Dermatitis and Hair Loss: Complete Guide
- Dandruff vs Dry Scalp: How to Tell the Difference
- Scalp Buildup: Causes and How to Remove
- Itchy Scalp and Hair Loss: Understanding the Connection
- Scalp Psoriasis and Hair Loss: Complete Guide
- Best Shampoos for Hair Loss: Evidence-Based Guide
- How Often Should You Wash Your Hair? Evidence-Based Guide by Hair Type
- Scalp Massage for Hair Growth: Does It Work? Evidence Review
- Scalp Inflammation: Signs, Causes, and Treatment Guide
Diet & Lifestyle 10
Where nutrition genuinely matters, and where the supplement aisle is selling you nothing.
- Best Diet for Hair Growth: Evidence-Based GuideDiscover which nutrients actually support hair growth. Science-backed guide to iron, vitamin D, protein, and the Mediterranean diet for healthier hair
- Biotin for Hair: How Much Do You Really Need?Evidence shows biotin supplements don't help hair growth in healthy people. Learn the truth about biotin, dosing, and the lab test danger FDA warns ab
- Sleep and Hair Loss: The Connection Your Dermatologist Might Not MentionResearch shows sleep disorders increase hair loss risk up to 370%. Learn how cortisol, melatonin, and circadian rhythms affect your hair and what you
- Stress Management for Hair Health: Evidence-Based Techniques That Actually WorkResearch shows meditation and relaxation reduce cortisol effectively. Learn evidence-based stress management techniques to support hair growth and rec
- Exercise and Hair Loss: What Research Actually ShowsDoes exercise cause hair loss? Research shows moderate exercise supports hair health. Learn the truth about weightlifting, cardio, and hair with evide
- Best Hair Growth Supplements: What the Evidence Actually ShowsWhich hair supplements actually work? Clinical evidence for Nutrafol, Viviscal, biotin, vitamin D, iron, and natural DHT blockers. Science-backed reco
- Protein Intake for Hair: Why It Matters and How Much You NeedHair is 88-95% keratin protein. Learn how much protein you need for hair growth, best sources, and when deficiency causes hair loss. Evidence-based re
- Iron Supplements for Hair Loss: When They Help and How Much You NeedIron deficiency causes 70% of female hair loss. Learn optimal ferritin levels for hair (40-70 ng/mL), best iron supplements, and absorption tips. Evid
- Zinc and Hair Loss: Deficiency Signs, Testing, and TreatmentZinc deficiency is 3.5x more common in alopecia areata. Learn deficiency signs, optimal zinc levels, best supplement forms, and when testing is needed
- 30-Day Hair Health Reset: Your Complete PlanA structured 30-day program combining Mediterranean diet, scalp massage, sleep optimization, and stress management. Research shows 57% reduced hair lo
Women's Hair Loss 10
Female pattern loss, postpartum shedding, menopause, PCOS and iron.
- Women's Hair Loss: The Complete Guide40% of women experience hair loss by 50. Learn the causes, get the right diagnosis, and discover treatments that work—minoxidil helps 40%, combination
- Female Pattern Hair Loss: Treatment Options That WorkMinoxidil stabilizes FPHL in 90% of women. Compare treatments: topical vs oral minoxidil, spironolactone (65.80% combo results), LLLT, PRP, and transp
- Hair Loss After Pregnancy: Recovery GuidePostpartum hair loss affects 40-50% of new mothers. Learn the timeline (starts month 2-3, peaks month 5, resolves by 12 months) and breastfeeding-safe
- Menopause and Hair Loss: What to Do50% of women experience hair loss during menopause. Learn why estrogen decline causes thinning, plus evidence-based treatments: minoxidil (90% stabili
- PCOS Hair Loss: Management Guide60-80% of women with PCOS experience hyperandrogenism causing hair loss. Learn treatment: spironolactone (65.80% improvement with minoxidil), OCPs, an
- Birth Control and Hair Loss Connection
- Minoxidil for Women: Complete Guide
- Women's Hair Loss Blood Tests to Request
- Iron Deficiency Hair Loss in Women
- Emotional Impact of Hair Loss: Support Guide for Women