What is the difference between 3C and 4A hair?

3C forms looser corkscrew curls about pencil width and reads as curly, while 4A forms tighter, springier S-coils about crochet-needle width and reads as coily, with more shrinkage.

What is the difference between 4A and 4B hair?

4A keeps a rounded, springy coil shape, while 4B bends into sharp Z-shaped angles with less definition. The pattern shape, coil versus zigzag, is the key difference.

Why is my 4A hair always dry?

The tight coil pattern stops scalp oils from reaching the ends, so 4A is dry by nature. Co-washing, deep conditioning and the LOC method keep it hydrated.

What does shrinkage mean for 4A hair?

Shrinkage is how much shorter coily hair looks dry versus stretched. 4A shrinks a lot, which is normal and a sign of healthy elasticity. Banding or stretching shows length if you want it.

4A Hair Type

4A hair is the loosest coily type: small, springy, well-defined S-shaped coils about the width of a crochet needle, with high shrinkage but clear definition. Here is how to confirm you are 4A, the moisture-first routine, and what to avoid.

4A at a glance

Pattern: Springy, defined S-coils
Reference: About a crochet needle
Frizz: Moderate to high
Oiliness: Low, needs moisture
Main challenge: Locking in moisture, managing shrinkage

What Is 4A Hair?

4A is the first and loosest coily type: small, springy coils in a clear S shape, about the width of a crochet needle, that keep their definition well for type 4 hair. It is the most defined of the coily family, with visible, uniform coils close to the head and high shrinkage. The tight pattern keeps scalp oils from reaching the ends, so 4A is naturally dry and thrives on moisture, but its springy coils take and hold definition readily when properly hydrated.

How Do You Know You Have 4A Hair?

Look for small, springy, defined coils. Air-dried 4A forms uniform S-coils about crochet-needle width, with strong shrinkage but clear definition. The border check with 3C: 3C is a looser corkscrew curl (pencil width) that reads as curly, while 4A is a tighter, springier coil that reads as coily. The border check with 4B: 4A keeps a round coil shape, while 4B bends into sharp zigzag angles. Defined, springy, crochet-needle coils are the 4A signature.

How Should You Care for 4A Hair?

The 4A routine centers entirely on moisture. The pillars: 1. Cleanse gently with a co-wash or sulfate-free shampoo to keep natural oils; 2. Deep condition every wash, since 4A is dry by nature; 3. Use the LOC or LCO method on soaking-wet hair to seal in water; 4. Define coils with a creamy leave-in and a soft-hold gel, working in sections; 5. Air dry or diffuse on low, then leave the coils alone; 6. Protect nightly with a satin bonnet, and consider protective styles to retain length and reduce manipulation.

What Should 4A Hair Avoid?

4A is dry and fragile, so the wrong habits cause dryness and breakage. Sulfate shampoos and skipping deep conditioning parch the coils. Detangling dry, or with a brush, snaps the strands, so detangle gently with conditioner on soaking-wet hair using fingers or a wide-tooth comb. Heat without protectant and rough cotton bedding both damage the pattern. And under-moisturizing is the single most common 4A mistake.

Frequently Asked Questions

What is the difference between 3C and 4A hair?: 3C forms looser corkscrew curls about pencil width and reads as curly, while 4A forms tighter, springier S-coils about crochet-needle width and reads as coily, with more shrinkage.
What is the difference between 4A and 4B hair?: 4A keeps a rounded, springy coil shape, while 4B bends into sharp Z-shaped angles with less definition. The pattern shape, coil versus zigzag, is the key difference.
Why is my 4A hair always dry?: The tight coil pattern stops scalp oils from reaching the ends, so 4A is dry by nature. Co-washing, deep conditioning and the LOC method keep it hydrated.
What does shrinkage mean for 4A hair?: Shrinkage is how much shorter coily hair looks dry versus stretched. 4A shrinks a lot, which is normal and a sign of healthy elasticity. Banding or stretching shows length if you want it.

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Last updated: June 2026