Ask five people with curly hair types what products they use and you will get five completely different answers — and all five can be right. That is the strange thing about curls: a routine that gives one person glossy ringlets leaves another flat, greasy, or frizzy, because "curly" covers everything from a loose beach wave to a dense, springy coil. The 2A to 4C system exists to put some order on that chaos.
Popularized by stylist Andre Walker and refined by the curl community over the years, the system sorts hair into numbered types by curl shape and lettered subtypes by tightness. It is not perfect — real heads of hair rarely fit one neat box — but it is the fastest way to decode product labels, tutorials, and advice written for hair like yours. Here is how it works and how to place yourself on the chart.
How the Curl Typing System Works
The number describes the overall pattern: Type 1 is straight, Type 2 is wavy, Type 3 is curly, and Type 4 is coily. The letter — A, B, or C — describes how tight that pattern is, with A the loosest and C the tightest. So a 2A has barely-there waves, while a 4C has the tightest coils on the chart.
Two caveats before we go type by type. First, most people have more than one pattern on their head; it is common to be, say, 3A at the crown and 2C underneath. Second, curl type only describes shape. Porosity (how easily hair absorbs moisture) and density (how much hair you have) matter just as much when choosing products, so treat your type as a starting point rather than a prescription.
Type 2: Wavy (2A to 2C)
2A waves are loose, stretched-out S-shapes that start away from the root, and the hair is often fine. The enemy here is weight — heavy creams and butters flatten 2A instantly, so light gels and mousses work best.
2B waves are more defined S-curves from the mid-length down, with some frizz at the crown. Lightweight stylers plus scrunching bring the wave out without gluing it down.
2C is the bridge to curly: thick, defined waves that start near the root, with a ringlet or two mixed in and a real tendency to frizz. This is where curly-hair techniques — squish-to-condish, diffusing, microfiber towels — start paying off.
Type 3: Curly (3A to 3C)
3A curls are big, shiny, springy loops about the width of sidewalk chalk. They are easily weighed down but also easily disturbed — raking fingers through dry 3A hair turns definition into fuzz.
3B curls are tighter, roughly marker-width ringlets with lots of volume. Dryness starts becoming the main issue at this tightness, so richer leave-ins and regular deep conditioning earn their keep.
3C curls are pencil-width corkscrews, densely packed, with big volume and big shrinkage. Moisture is everything: cleanse gently, condition generously, and style on soaking-wet hair for the best clumping and definition.
Type 4: Coily (4A to 4C)
4A coils are tight, springy, about crochet-needle width, with a visible S-pattern and significant shrinkage. They respond beautifully to layered moisture — the classic LOC method of leave-in, oil, then cream.
4B hair bends in sharp Z-shaped angles rather than spirals. The zigzag structure makes it the point on the chart where natural oils have the hardest time traveling down the strand, so sealing in moisture and handling hair gently are non-negotiable.
4C is the tightest pattern, with coils so fine and dense the curl may be hard to see without stretching a strand. It can shrink to a fraction of its true length and is the most fragile type on the chart — which just means it rewards low-manipulation styling, rich conditioning, and patience more than any other.
How to Identify Your Curl Type
Do the test after a wash, not on day-three hair. Cleanse, condition, then let your hair air dry with no product and no towel-rubbing, and look at what forms:
- Loose S-waves that start mid-length: Type 2 territory. The closer to the root the wave starts, the further down the letters you go.
- Defined loops or ringlets you can wrap around a finger: Type 3. Compare the loop to chalk, a marker, or a pencil to pick your letter.
- Tight coils, sharp zigzags, or dramatic shrinkage: Type 4. If you see spirals it leans 4A; sharp angles lean 4B; very fine, dense coils with maximum shrinkage lean 4C.
Seeing two or three patterns is normal. Care for the driest, tightest section you have and the rest of your hair will generally be happy too.
Care Basics for Every Curl Type
Whatever your letter, the fundamentals are shared: cleanse gently, condition more than feels reasonable, style on wet hair, and dry without friction. A good leave-in is the single most universal tool across types — something like the Goddess All prebiotic leave-in conditioner, which detangles, tames frizz, and shields hair from sun and humidity while feeding the scalp with inulin fiber, works whether you are a 2B or a 4A; you simply use more of it as the numbers climb. Our beginner curl routine puts the full sequence together, and if you heat-style even occasionally, read our heat protectant guide first — heat damage is the fastest way to blur any curl pattern.
One underrated upgrade for every type: how you tie your hair up. Elastic bands crease and snap curls, especially at the fragile Type 4 end of the chart. A strong claw clip holds a pineapple or updo without tension — the France Luxe large cutout claw clip is handmade in France from cellulose acetate and built specifically to hold thick hair, which makes it a favorite for dense 3C-4C manes that snap lesser clips.
Curious about ingredient trends by type? Rice water rinses have a long history in curl care — our rice water for hair guide covers what it can and cannot do.
Knowing your curl type will not change your hair, but it changes everything about how you shop and style for it. Find your letters, care for your driest section, and remember the chart serves you — not the other way around.