How to Tell Your Hair Type: Straight, Wavy, Curly, or Coily

To tell your hair type, wash your hair, apply no product, and let it air-dry completely undisturbed — then look at the shape of a single dry strand.

Straight hair has no bend, wavy hair forms a loose “S,” curly hair forms a spring-shaped spiral, and coily hair forms a tight zigzag or corkscrew.

From there, the tightness and diameter of that pattern tell you your specific subtype (2A-2C, 3A-3C, or 4A-4C), which is what actually determines which products and cuts will work.

Most guys get this wrong not because their hair is hard to read, but because they never actually look at it in its natural state. Product, heat styling, towel-drying with friction, and even how long the hair is can all disguise the pattern underneath.

This guide walks through the exact test to get an accurate read, how to place yourself in the full 12-type system, and what actually changes about your routine once you know.

How to Tell Your Hair Type: The Quick Self-Check

Here’s the fastest reliable version of the test, if you want the short answer before the full breakdown below:

1. Wash your hair with a clarifying shampoo to strip out any old product buildup that could be masking the natural pattern.
2. Apply nothing — no leave-in, no gel, no cream. Product weighs hair down and can flatten waves or curls, especially on day one.
3. Let it air-dry completely, without touching it. Touching, scrunching, or brushing wet hair changes how the strand dries and can create or destroy pattern that isn’t actually there.
4. Once fully dry, isolate one strand near the crown and look at its shape from root to tip.

If it’s straight with no bend: Type 1. If it forms a loose, open “S” shape: Type 2 (wavy). If it forms a defined spiral or ringlet you could wrap around a pencil: Type 3 (curly). If it forms a tight zigzag, spring, or doesn’t have a clear “S” at all: Type 4 (coily).

That single check gets you your main type. The step-by-step process below gets you your exact subtype, which matters more for product selection than the main type alone.

Read also: How to Choose a Haircut Based on Your Face Shape

Step-by-Step: Identifying Your Full Hair Type

Step 1: Do the wash-and-air-dry test correctly

Use a clarifying shampoo the first time you do this — regular shampoo, conditioner residue, and old styling product can all mask your natural pattern, especially near the roots.

Skip conditioner and any leave-in for this test specifically; you’re trying to see the strand’s natural behavior, not its styled behavior. Let it dry fully in the air, ideally overnight or over several hours, with zero touching, brushing, or scrunching.

Step 2: Isolate and examine a single strand

Once fully dry, pull one strand away from the rest of your hair — near the crown is most representative, since the crown tends to show your dominant pattern most clearly. Hold it up against a plain background (a wall, a piece of paper) and look at its shape from root to tip:

• No bend at all, lies flat: Type 1 (straight)
• A loose, open “S” curve, mostly straight with a bend near the ends: Type 2 (wavy)
• A defined, springy loop or ringlet shape: Type 3 (curly)
• A tight zigzag, corkscrew, or a pattern with no visible “S” at all: Type 4 (coily)

Step 3: Narrow down your subtype using diameter and tightness

Each main type (2, 3, and 4) splits into A, B, and C subtypes based on how tight or wide the pattern is. Compare your strand to these benchmarks:

Type 2 (Wavy):

• 2A: Barely-there waves, close to straight, only visible when hair is longer
• 2B: More defined “S” waves starting from mid-strand
• 2C: Distinct, well-defined waves starting close to the root, sometimes with a few looser curls mixed in

Type 3 (Curly):

• 3A: Large, loose curls, roughly the diameter of a piece of sidewalk chalk
• 3B: Springy, bouncy curls, roughly the diameter of a marker
• 3C: Tight, corkscrew curls, roughly the diameter of a pencil or drinking straw

Type 4 (Coily):

• 4A: Tightly coiled, springy pattern with a visible, defined curl when stretched
• 4B: Tight zigzag pattern rather than a defined curl, less springback
• 4C: Very tight zigzag with minimal to no visible curl definition, highest shrinkage

If your strand looks like it’s between two subtypes, that’s normal — most heads aren’t a single, uniform subtype across the whole scalp.

Step 4: Check different areas of your head separately

Run the same strand check at your crown, your nape (back of the neck), and your temples. It’s extremely common to have a looser pattern at the crown and a tighter one at the nape, or vice versa — this is normal, not a sign you did the test wrong. Knowing this upfront saves confusion later, since a single all-over product or cut plan often needs to account for at least two different patterns on the same head.

Step 5: Do a quick porosity check while you’re at it

Porosity — how easily your hair absorbs and holds moisture — isn’t part of the type system, but it changes which products actually work for your type, so it’s worth checking at the same time. Drop a clean, product-free strand into a glass of room-temperature water:

• Floats near the top after a few minutes: low porosity (hair repels moisture, needs lighter, warmer-applied products)
• Sinks slowly, hangs in the middle: normal porosity
• Sinks quickly: high porosity (hair absorbs moisture fast but loses it fast too, needs heavier creams and sealing oils)

Step 6: Confirm your read over 2-3 wash cycles

A single wash-and-air-dry test is usually accurate, but hair pattern can look slightly different depending on humidity, recent heat damage, or how the hair was cut last. Repeat the check over your next two or three washes before locking in your type — if the result is consistent, you’ve got it confirmed.

Results by Hair Type

Type 1 (Straight) → Prone to getting oily fastest since scalp oil travels down the strand with nothing to slow it. Lightweight, oil-free products work best; heavy creams will weigh it down and look greasy by day two. A texturizing spray or clay is usually the only “hold” product needed.

Type 2 (Wavy) → The most easily disguised type, since waves can be scrunched out with a brush or weighed flat with heavy product. A sea salt spray or lightweight mousse applied to damp hair, then air-dried or diffused, brings out the pattern instead of flattening it. Overwashing strips the natural oils that help define the wave, so 2-3 washes a week is usually plenty.

Type 3 (Curly) → Needs the most moisture of the three middle types, since the curl’s bends make it harder for scalp oil to travel down the shaft. A leave-in conditioner plus a curl cream, applied to soaking-wet hair and scrunched upward, is the standard routine. Avoid brushing dry — it breaks up curl clumps and creates frizz instead of definition.

Type 4 (Coily) → Needs the most moisture of all four types and is the most prone to shrinkage, meaning stretched length can look 30-70% shorter once fully dry. Heavier butters and oils, applied on soaking-wet hair, and protective styling (twists, braids) between wash days help retain length and moisture. Detangling should always happen on wet, conditioner-coated hair, never dry.

Common Mistakes

Checking your type right after towel-drying. Rubbing hair with a towel roughs up the cuticle and creates frizz that has nothing to do with your actual pattern. Squeeze water out gently with a microfiber towel or old t-shirt instead, and let the rest air-dry undisturbed.

Judging your type from product-styled hair. Gel, mousse, or cream can smooth waves into looking straighter or clump curls into looking tighter than they naturally are. Always do the diagnostic check on clean, product-free hair.

Only checking one spot on your head. Most people have at least two patterns across their scalp — checking only the front or only the crown gives an incomplete picture that can lead to buying the wrong products for the rest of your head.

Confusing damage or dryness for a looser curl pattern. Heat damage, chemical processing, or dryness can relax a natural curl or coil pattern over time, making Type 3 hair look like Type 2, for example. If your hair used to be curlier and has gradually loosened, damage — not a change in type — is the more likely explanation.

Assuming hair type alone dictates your haircut. Type tells you about pattern and moisture needs, but density (how much hair you have) and texture (the thickness of each individual strand) also affect what a haircut will look like. Two guys with identical curl type but different density can need different cuts entirely.

What to Tell Your Stylist

• “My hair type is [2B / 3A / 4C, etc.] — can you cut it dry, or account for shrinkage if it’s wet?” (Curly and coily types shrink significantly once dry, so a wet cut can end up shorter than expected.)
• “My pattern is tighter at the [crown/nape] and looser at the [nape/crown] — can the layers account for that?”
• “What’s my porosity, and does that change which products you’d recommend?”
• “Can you show me how to scrunch/diffuse/twist this so it looks like it does right now once I’m styling it myself at home?”

FAQ

Can my hair type change over time? Hormonal shifts, aging, pregnancy, certain medications, and repeated heat or chemical damage can all loosen or, less commonly, tighten a natural pattern over months or years. A gradual change is normal; a sudden change is more often a sign of damage than a true type shift.

Is it normal to have more than one hair type on my head? Yes — having two, or even three, patterns across the scalp (commonly a tighter pattern at the nape and a looser one at the crown) is extremely common and not a sign of a testing error.

What’s the actual difference between wavy and curly hair? Wavy hair (Type 2) forms an open “S” shape and usually lies closer to the head; curly hair (Type 3) forms a fuller, springy loop or ringlet with a visible circumference. If you can wrap a dry strand around a pencil and it holds that shape, you’re in curly territory rather than wavy.

Does chemically treated or color-treated hair test differently? Yes — chemical processing (relaxers, perms, bleach, repeated color) can alter or damage the hair’s natural pattern, so a test on heavily processed hair may reflect the treatment as much as your genetic pattern. If you’ve had recent chemical work done, wait until new, untreated growth comes in near the roots and test that section instead.

Do I need different products for every subtype, or just the main type? The main type (straight, wavy, curly, coily) gets you in the right general product category, but the subtype (A, B, or C) fine-tunes how much moisture and hold you actually need — a 3A curl and a 3C curl can need noticeably different amounts of product despite both being “curly.”