Kinky hair is Type 4 in the widely used Andre Walker hair typing system, the tightest and most coiled of all hair textures. It sits at the far end of the spectrum from straight (Type 1), past wavy (Type 2) and curly (Type 3), and is defined by extremely tight coils, zigzag patterns, or both. If your hair springs up close to your scalp, shrinks dramatically when wet, and feels cottony to the touch, you likely have kinky hair.
How Kinky Hair Is Classified
The Andre Walker system divides kinky hair into three subtypes based on coil tightness and definition:
- 4A: The loosest of the kinky types. Coils form a visible, springy “S” pattern, soft to the touch, with a defined curl you can see clearly.
- 4B: Coils tighten into sharp “Z”-shaped angles rather than round spirals. The pattern is less defined, fluffier, and more voluminous than 4A. Shrinkage can reach up to 70%.
- 4C: The tightest coils of all, with little to no visible curl pattern. The texture looks and feels cotton-like, and shrinkage can hit 75%, meaning hair that’s 12 inches long may appear to be only 3 inches.
There’s overlap between these categories, and many people have more than one texture on their head. The terms “kinky” and “coily” are often used interchangeably, but they describe slightly different things. Kinky refers to strands that bend in sharp zigzag angles. Coily describes strands that wrap into tight spirals. Type 4 hair can be one, the other, or both.
What Makes Hair Kinky
The shape of your hair follicle determines your curl pattern. Straight hair grows from a round follicle. Wavy hair comes from an oval one. Kinky hair grows from a flat, ribbon-like follicle that forces the strand to twist and bend as it emerges. The flatter the follicle, the tighter the coil.
This shape also affects how the outer layer of each strand, the cuticle, sits along the hair shaft. On straight hair, cuticle scales lie flat. On kinky hair, the constant twisting causes those scales to lift and separate at each bend point. These raised areas are structurally weaker, which is why kinky hair is more prone to breakage at specific spots along the strand.
Why Kinky Hair Is Naturally Dry
Your scalp produces sebum, a natural oil that acts as a built-in conditioner. On straight hair, sebum slides easily from root to tip. On kinky hair, every coil and bend acts like a roadblock. The oil simply can’t travel down a zigzag path the way it glides along a straight one. This is the core reason Type 4 hair tends to feel dry regardless of how much product you apply.
Porosity plays a role too. Type 4 hair often has higher porosity, meaning the cuticle layer absorbs water quickly but loses it just as fast. Think of it like a sponge with large holes: great at soaking things up, terrible at holding onto them. This combination of poor sebum distribution and high moisture loss makes hydration the single most important factor in kinky hair care.
Growth Rate and Shrinkage
A common misconception is that kinky hair doesn’t grow. It does, but at a slower rate than straight hair. A study published in the British Journal of Dermatology measured daily hair growth and found that African hair grew at an average of about 256 micrometers per day, compared to roughly 396 micrometers per day for Caucasian hair. That translates to about 3.5 inches per year versus 5.5 inches.
Shrinkage makes the difference look even more dramatic. When 4C hair can compress to just 25% of its true length, a year of growth may barely register visually. This isn’t damage or a problem to fix. It’s a sign of healthy elasticity. Stretching styles like twistouts or braids can reveal your actual length without applying heat.
The LOC and LCO Moisture Methods
Because kinky hair loses moisture so easily, many people use a layering approach to lock hydration in. The two most popular versions are LOC and LCO.
LOC stands for liquid, oil, cream. You start with a water-based leave-in conditioner on damp hair, follow with an oil to hold that moisture in, then seal everything with a cream. LCO flips the last two steps: liquid first, then cream, then oil as the final seal. The idea behind both is the same. Water hydrates, and then you trap it inside the strand with heavier products.
Which order works better depends on your specific porosity. If your hair absorbs moisture easily but dries out fast (high porosity), LCO often works better because the oil as the outermost layer creates a stronger seal. If your hair resists absorbing moisture in the first place (low porosity), LOC may be more effective because the oil layer helps the cream penetrate more slowly. Experimenting with both for a week or two on freshly washed hair is the most reliable way to figure out which your hair prefers.
Fragility and Protective Care
Type 4 hair is the most fragile texture on the spectrum. Each bend in a zigzag strand is a potential breaking point, especially when hair is dry or handled roughly. Detangling on dry hair, using fine-tooth combs, or pulling styles too tight can all cause breakage that gets mistaken for slow growth.
Protective styling, where the ends of your hair are tucked away in braids, twists, or updos, reduces the daily manipulation that leads to breakage. The goal isn’t to hide your hair. It’s to minimize friction, tangling, and moisture loss from the most vulnerable parts of the strand. Sleeping on a satin or silk pillowcase serves the same purpose: cotton absorbs moisture and creates friction, while smoother fabrics let your hair glide.
Detangling works best on wet, conditioner-coated hair using your fingers or a wide-tooth comb, starting from the ends and working up toward the roots. This approach follows the direction of the cuticle scales rather than pushing against them, which dramatically reduces snapping.
Identifying Your Subtype
The simplest way to identify your kinky hair subtype is to wash your hair, skip all products, and let it air dry completely. Look at a single strand up close. If it coils into a defined spiral you could wrap around a coffee stirrer, that’s 4A. If it bends in sharp angles like a zigzag or the letter Z, that’s 4B. If the coils are so tight that individual strands don’t form a recognizable pattern at all, that’s 4C.
Keep in mind that hair typing is a starting point, not a rulebook. Two people with 4C hair can have completely different densities, porosities, and strand thicknesses. Your porosity and how your hair responds to moisture will ultimately tell you more about what products and routines work than the letter and number alone.