4A vs 4B vs 4C Hair: Understanding Your Curl Pattern

Introduction

Type 4 hair gets lumped into one bucket too often. In reality, 4A, 4B, and 4C behave very differently — and most of us carry a mix of all three on the same head. The goal of this guide is not to box you in. It is to give you the language to read what your hair needs in each section.

Think of Type 4 as a spectrum, not three buckets

There is no clean line between 4A, 4B, and 4C — they blur into each other. The system is useful only if it helps you pick products and styles. Otherwise, ignore it.

4A: soft, defined springs

• Pattern: tight S-shaped coils, roughly the size of a crochet needle
• Shrinkage: 30–50%
• Loves: water-based leave-ins, defining gels, the shingling method
• Watch: heavy butters can weigh coils down

4B: sharp Z-shaped bends

• Pattern: angular Z-bends with little visible spiral
• Shrinkage: 50–70%
• Loves: creamy stylers, twist-outs, braid-outs, the LOC method
• Watch: prone to single-strand knots — keep ends sealed and stretched

4C: dense, micro-coiled

• Pattern: extremely tight coils that look like one solid mass when dry
• Shrinkage: 70–80%
• Loves: deep conditioning with heat, butters, low-manipulation styles
• Watch: dries quickly — moisture mist mid-week is non-negotiable

The wet-strand test that ends the debate

Take a single freshly washed, conditioner-stripped strand. Lay it on a white paper towel and look closely. A clean spiral = 4A. An angled Z = 4B. A tight micro-coil that's hard to see = 4C. Do this in three places: crown, side, nape. You will likely see different patterns in each.

What if your crown is one type and your nape is another?

Welcome to the club — that is normal. Treat each section like its own hair. The nape often needs more moisture; the crown often needs more protein and lift. When you twist, vary section size: smaller in tighter areas, larger in looser ones.

Routine differences at a glance