Hair guides that answer first
Every guide starts with the answer, explains how to check it on your own hair and lists its sources. Each one pairs with a free tool, so you can go from reading to a first read of your own in a minute.
- New guides
- 6
- Topic articles
- 116
- Cost
- Free
- Sources
- Cited on every page
Hair measurements and scales
What the charts mean, and how to read yours.
- 5 min readNorwood scale chart
Stages 1 to 3 are read at the front. The crown decides the later stages.
Front first, then crown - 4 min readHairline types
Most shapes are just shape. Movement over time is what matters.
Shape is not loss - 4 min readWidow’s peak
A widow’s peak is where the middle of the hairline sits, not whether hair is going.
A shape, not loss - 5 min readHow high a hairline should be
Equal thirds are a drawing rule. Most healthy faces do not match it.
Proportion, not a rule
Telling them apart
Two things that look alike, and the one sign that separates them.
Start here
Practical guides to photos, hair type, porosity, labels and routines.
- GuideConsistent hair photo guide
A useful hair photo starts with a setup you can repeat. Learn how to keep the view, lighting, distance, and notes consistent without turning every photograph into a verdict.
Read the guide - GuideHair porosity observation guide
Keep useful observations about how hair takes water and dries, without treating a home test as a measured diagnosis.
Read the guide - GuideUnderstanding ingredient labels
Understand the names on a label, the limits of ingredient lists, and the questions worth asking before you buy. A reading guide, not a product safety score.
Read the guide - GuideHair type and texture guide
Straight, wavy, curly, and coily are starting descriptions. Look at pattern, strand feel, density, and styling separately.
Read the guide - GuideUnderstanding AI hair analysis
A photograph, an automated estimate, and a clinical assessment are different things. Questions to ask before trusting a hair-analysis result.
Read the guide - GuideExplore HairLens
What you can do on the HairLens AI website today, and what remains a product concept.
Read the guide - GuideCompare hair app approaches
Compare capture methods, result explanations, privacy, exports, accessibility, and real availability across hair-analysis apps.
Read the guide - GuidePlan a practical hair routine
Start with the care you already use, choose a workable schedule, and leave room for changes. Includes an example week.
Read the guide
Topics
116 in-depth articles across 11 topics.
- 14 articlesHair Loss
Learn how shedding, thinning, breakage, and scalp symptoms differ—and what an evaluation can clarify.
Explore the topic - 10 articlesWomen’s Hair
Explore pregnancy, hormones, thyroid health, and other contributors to hair changes without assuming a single cause.
Explore the topic - 10 articlesMen’s Hair
Make sense of hairline changes, pattern loss, treatment trade-offs, and long-term maintenance.
Explore the topic - 10 articlesHair Growth
Understand the hair cycle and separate measurable changes from promises of instant growth.
Explore the topic - 11 articlesScalp Health
Understand flakes, itch, inflammation, and when a scalp concern needs more than a different shampoo.
Explore the topic - 10 articlesNutrition & Lifestyle
Explore nutrition and lifestyle evidence without restrictive diets or unnecessary supplements.
Explore the topic - 10 articlesHair Loss Decisions
Prepare useful observations, weigh treatment choices, and recognise symptoms that should not wait.
Explore the topic - 10 articlesHair Types
Separate texture, strand thickness, density, and damage to make everyday care more practical.
Explore the topic - 10 articlesHair Routines
Build a flexible routine for washing, detangling, styling, and protecting the hair you have.
Explore the topic - 11 articlesHair Products
Explore what cosmetic ingredients can do for hair fibres—and what they cannot do for hair loss.
Explore the topic - 10 articlesHair FAQs
Unpack familiar hair claims with clear explanations, limits, and practical takeaways.
Explore the topic