I used to think my curls came with a number, and that the number came with a rulebook. Find your type, the internet promised, and the right products fall into place. So I typed myself a 3C, bought everything labeled for it, and stayed just as frustrated as before.
Here is the thing almost every curl-type guide gets wrong: they tell you that to care for your hair correctly, you must first know your type, as if 3B and 3C come with different instruction manuals. They copy the same chart and the same product lists from each other. I believed it too, until I learned what the chart actually measures, and what it cannot tell you.
So with my friend, a hair scientist and cosmetic formulator with a PhD in chemistry, here is the honest version: what the curl types are, how to find yours, where the system falls short, and the things that actually decide your routine.
Curly hair types run from 2A, the loosest wave, to 4C, the tightest coil, sorted only by the shape of your curl. Your type is useful shorthand and a fair starting point for how much weight your hair can carry, but it does not decide your routine. The condition of your hair, how worn or damaged the cuticle is, along with how dense your hair is and how thick each strand is, matters more than the letter. Most people have more than one pattern on their head, and your type can look different wet, dry, healthy, or damaged. Use it to name your curls, not to predict what they need.
What Are the Curly Hair Types?
The labels come from the Andre Walker hair typing system, sorted into four families by curl shape on clean, product-free, air-dried hair: type 1 is straight, type 2 is wavy, type 3 is curly, and type 4 is coily. Each family splits into A, B, and C, where A is the loosest pattern in that family and C is the tightest. That is the whole logic. The number is your overall shape; the letter is how tight it gets.
- Type 1: Straight (1A, 1B, 1C)
- Type 2: Wavy (2A, 2B, 2C)
- Type 3: Curly (3A, 3B, 3C)
- Type 4: Coily, sometimes called kinky (4A, 4B, 4C)
It is shared shorthand, the way stylists and curlies talk about pattern, product weight, and how delicate the hair is. It is not a medical or scientific law, and it is not a verdict on your hair. If you want the wider view of texture beyond pattern, see our guide to hair textures.
Where the Hair Typing System Falls Short
This part rarely makes it into curl-type guides, and it should. Andre Walker, Oprah Winfrey’s longtime stylist, built the system in the 1990s to market his own line of hair products. It caught on as a shorthand, but it was a sales tool first, not a scientific framework.
It shows. The original system did not even include 3C or 4C; those were added later, after people pointed out their hair was nowhere on the chart, which is a strange gap for a system meant to describe everyone. It has been widely criticized for implying a hierarchy, treating looser, straighter patterns as the tidy ideal and tighter coils as the harder-to-manage exception. And it flattens real differences: it says nothing about how dense your hair is, how thick each strand is, or what condition your hair is in, even though those decide far more about your day-to-day routine than whether you are a 3B or a 3C.
None of that means the chart is useless. People search by it, talk by it, and shop by it, so it is genuinely helpful as a common language and a rough starting point. Just hold it loosely. Your type is a description of your curl’s shape, not an instruction manual for your hair.
How to Find Your Curl Type
The chart is built around the shape your curl takes on its own, so judge it on hair that is clean, free of product, and fully air-dried. Wet hair stretches looser than it really is, and product can clump or define a pattern that is not naturally there.
- Start clean and bare. Wash, skip the styling products, and let your hair air-dry with as little handling as possible.
- Look at one section. Pull a single curl or a small section and look at its shape, not your whole head at once.
- Match the shape, then the size. Is it a wave (an S that lies flat-ish), a curl (a defined spiral), or a coil (a tight, springy zig-zag or corkscrew)? Then judge tightness by width: 3A is about the width of sidewalk chalk, 3B about a Sharpie marker, 3C about a pencil or straw, and 4A about a crochet needle.
- Expect more than one. It is completely normal to have looser curls at the crown and tighter ones at the nape, or two patterns mixed throughout. Most heads are a blend, so type yourself by what is most common and do not stress the rest.
If you want a faster route, our quizzes walk you through it; you can also just scroll the photos below and find the one that looks most like your hair after a wash.
Type 1: Straight Hair
Included so the chart is complete. Type 1 hair has no curl pattern and reflects light easily, so it tends to look shiny but can fall flat. 1A is fine and pin-straight, 1B has more body, and 1C is the thickest and coarsest, sometimes with a slight bend. It is the odd one out on a curly-hair site, but it anchors the system.
Type 2: Wavy Hair
Wavy hair sits between straight and curly, forming a loose S that mostly shows from the mid-lengths down. It frizzes easily and goes flat under heavy products, so waves usually do best with a lighter touch. Full breakdown in our guide for wavy hair (2A, 2B, 2C).
Type 2A Hair
2A hair is the loosest wave, a soft bend from the mid-lengths down that can look nearly straight until it air-dries. It is easily weighed down, so heavy creams and butters flatten it fast.
Type 2B Hair
2B hair has more defined S-shaped waves that start higher up the strand, with flatter roots and a real tendency to frizz, especially in humidity.
Type 2C Hair
2C hair is the tightest wave, often mistaken for curly, with waves that start near the roots. It is usually thicker than the other two wavy types and the most prone to frizz.
Type 3: Curly Hair
Type 3 is defined, springy spirals with visible bounce. The curls range from loose loops to tight corkscrews, and they show their shape with or without product.
Type 3A Hair
3A hair forms loose, shiny spirals about the width of sidewalk chalk. It defines easily without heavy product and is prone to light frizz.
Type 3B Hair
3B hair has springier ringlets about the width of a Sharpie marker, with lots of volume. It commonly shows more than one pattern on the same head and frizzes readily.
3C Hair
Type 3C Hair
3C hair is tight corkscrews about the width of a pencil or straw, densely packed for a full look. It can lose definition and feel cottony when it is dry or worn.
Type 4: Coily Hair
Type 4 is tightly coiled, springy, and densely packed, with the most shrinkage of any family, so it can look far shorter than its true length. The strands themselves are often fine even when the hair reads as thick, which is part of why type 4 hair is the most fragile and the most worth handling gently.
Type 4A Hair
4A hair forms small, springy S-shaped coils about the width of a crochet needle. It holds the most visible definition of the type 4 family and shrinks to about half its length when dry.
Type 4B Hair
4B hair bends in sharp, Z-shaped angles rather than smooth coils. It is densely packed with lots of body, tighter than 4A, and prone to dryness.
Type 4C Hair
4C hair is the tightest pattern, fine zig-zag coils packed densely together with the most shrinkage and the least natural definition. It is the most fragile pattern and rewards gentle handling and protective styling.
Your Type Is the Start, Not the Routine
Here is the part the chart leaves out. Two people can both be 3B and need completely different products, because curl shape is only one of several things that shape a routine, and not the most important one. These matter more:
- The condition of your cuticle. What people call porosity is mostly how worn or damaged the outer cuticle is, on a spectrum, not a fixed type you are born with. Smooth, healthy hair lets product sit on top; bleached, colored, heat-styled, or weathered hair drinks it in and dries out faster. This drives more of your product choices than your curl pattern does. Start with Hair Porosity 101.
- Density. How many strands you have packed together. High density needs more product and more thorough cleansing; low density gets weighed down quickly.
- Strand width. Whether each individual strand is fine, medium, or coarse. Fine hair flattens under rich creams no matter the curl pattern; coarse hair can take more.
- The job in front of you. Cleansing an oily scalp, adding slip to dry ends, holding a style, or clearing buildup. Pick products for the job, then judge by how your hair responds, not by the letter on the chart.
So treat your type as the opening line of the conversation, not the conclusion.
The Science: Why Your Hair Is Curly
Researchers first looked closely at why hair is curly in 2003,[1] and over the following years built ways to measure curl geometry across the world’s hair rather than sorting it by race or by eye.[2][3] The curl turns out to start deep in the follicle, in the middle layer of the strand called the cortex.[4]
Inside the cortex are two kinds of cells, ortho-cortical and para-cortical, and the ratio between them is what bends the fiber. When more para-cortical cells gather on one side of the strand, that side contracts and the hair curls; the more lopsided the ratio, the tighter the curl.[5][6][7] It is also why a strand is not a perfect cylinder. Straight hair is rounder in cross-section, and curlier hair is flatter and more elliptical.
That flatter shape has a real consequence: curlier fibers are mechanically weaker and more prone to breaking at the bends, where stress concentrates.[8][9] This, not a personal failing or the wrong products, is why curls feel more fragile and frizz-prone than straight hair. It is built into the shape. Handling gently and keeping the cuticle smooth does more for that fragility than chasing a type-specific routine.
Choosing Products: Start Here, Not With Your Type
Since your type does not dictate your routine, use it only for one rough call: how much weight your hair can carry. Looser patterns flatten easily and like lighter formulas; tighter, drier patterns usually want richer ones and gentler handling. These are starting points from brands we trust, not type rules. Then choose by the job and adjust to how your hair responds.
Wavy (Type 2): Go Light
Lightweight cleansers and stylers keep waves from collapsing. Try Bounce Curl Weightless Shampoo or Odele Smoothing Shampoo, then a light styler. A mousse, a soft gel, or a curl cream made for waves used sparingly works best.
Curly (Type 3): Medium Weight
Most curly hair does well with a gentle, conditioning cleanse and a styler with real hold. For cleansing, Bounce Curl Pure Silk (code muse), Pattern Hydration Shampoo, or adwoa Baomint are reliable. Then pick a gel for hold and definition, and see the full shampoo guide to match a cleanser to your hair.
Coily (Type 4): Rich and Gentle
Coily hair tends to want more slip and emollience, plus careful handling to protect fragile strands. For cleansing with slip, Mielle Pomegranate & Honey, Innersense Hydrating Hairbath, or Camille Rose Clean Rinse work well, with a richer deep conditioner like Briogeo Don’t Despair, Repair on wash day. Finish with a butter or cream and a gel to hold definition.
How to Care for Curly Hair, Whatever Your Type
The fundamentals are the same across the chart, which is the whole point. Cleanse your scalp regularly so buildup and oil do not pile on. Follow with a conditioner that gives real slip, since that is where most of the softness comes from. Style on soaking-wet hair to lock in definition, then leave your curls alone while they dry. Handle gently, especially the more fragile tighter patterns, and judge everything by how your hair looks and feels a few wash days later. For the full walkthrough, see how to establish a curly hair care routine.
Curly Hair Type FAQ
How do I find my curl type?
Look at clean, product-free, fully air-dried hair, since wet or styled hair misleads you. Pull one section, decide whether it is a wave, curl, or coil, then judge tightness by width against the photos above. If you fall between two, you are probably a mix of both.
Can you have more than one curl type?
Yes, and most people do. Looser curls at the crown with tighter ones underneath is extremely common. Type yourself by your most common pattern and do not worry about the rest.
Does your curl type ever change?
Your underlying pattern is largely genetic, but what you see can shift. Heat, bleach, color, and weathering can loosen or distort curls, and hormones, pregnancy, and some medications can change your pattern too. Often what changed is the condition of your hair, not the pattern itself.
Is 2C curly or wavy?
It sits right on the border. 2C is the tightest wave, with spirals that start near the roots, so it is often mistaken for 3A curly hair. The line between them is genuinely blurry, which is fine.
Does porosity matter more than curl type?
For choosing products, usually yes. The condition of your cuticle, along with your density and strand width, drives more of your routine than whether you are a 3B or a 3C. Curl type mostly tells you how much weight your hair can carry.
Why doesn’t my hair match any single type?
Because the system is shorthand, not a perfect map. Real hair is a blend, and the chart was never built to capture every variation. Pick the closest match and move on; it is a starting point, not a diagnosis.
Knowing your curl type is a lovely place to start and a fun way to find your people in the curl community. Just remember it is the first word, not the last. What your hair actually needs comes from its condition and how it responds, and that you learn by paying attention, not by reading a letter off a chart.
References
- Bernard, B. A. (2003). Hair shape of curly hair. Journal of the American Academy of Dermatology, 48(6 Suppl), S120-S126.
- De La Mettrie, R., Saint-Leger, D., Loussouarn, G., Garcel, A., Porter, C., & Langaney, A. (2007). Shape variability and classification of human hair: a worldwide approach. Human Biology, 79(3), 265-281.
- Loussouarn, G., Garcel, A. L., Lozano, I., Collaudin, C., Porter, C., Panhard, S., Saint-Leger, D., & de La Mettrie, R. (2007). Worldwide diversity of hair curliness: a new method of assessment. International Journal of Dermatology, 46, 2-6.
- Nagase, S., et al. (2008). Characterization of curved hair of Japanese women with reference to internal structures and amino acid composition. Journal of Cosmetic Science, 59(4), 317-332.
- Bryson, W. G., et al. (2009). Cortical cell types and intermediate filament arrangements correlate with fiber curvature in Japanese human hair. Journal of Structural Biology, 166(1), 46-58.
- Cloete, E., Khumalo, N. P., & Ngoepe, M. N. (2019). The what, why and how of curly hair: a review. Proceedings of the Royal Society A, 475(2231), 20190516.
- Ezawa, Y., et al. (2019). Stiffness of human hair correlates with the fractions of cortical cell types. Cosmetics, 6(2), 24.
- Syed, A. N., & Syed, M. (2021). Curly Hair: Structure, Properties, and Care. Society of Cosmetic Chemists, 75th Annual Meeting, NY, USA.
- Camacho-Bragado, G., Balooch, G., Dixon-Parks, F., Porter, C., & Bryant, H. (2015). Understanding breakage in curly hair. British Journal of Dermatology, 173, 10-16.
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