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Type 4A Hair

Type 4A hair forms small, tightly wound S-shaped coils about the width of a knitting needle, with a visible pattern and high shrinkage.

Coily · Small, defined coils

Type 4A is the loosest of the coily types, though the coils are still small — roughly the width of a crochet hook, coffee stirrer or knitting needle. Unlike 4B and 4C, the coils keep a clear, repeating S-pattern you can see when the hair is wet or freshly styled.

4A hair usually shrinks a lot, often half its stretched length or more, and it tends to feel dry quickly. Coily strands have many bends along their length, and each bend is a spot where the hair is more fragile and where tangles start. Research on tightly coiled hair has found it knots and breaks more easily during grooming than straighter hair, so gentle handling pays off in length retention.

Because the pattern is defined, 4A hair responds well to wash-and-go styles with a moisturizing leave-in and gel, as well as to twist-outs and coil sets. Moisture plus a sealing step is the backbone of most 4A routines; the right weight of products depends on porosity and strand thickness.

Take the quiz Test your porosity →

Hair type alone doesn’t decide your routine. Porosity, density and strand thickness shape which products work far more than curl pattern — two people with 4A hair can need very different routines.

Strengths

Coils define well with the right products.
Holds twist-outs, coil-outs and finger coils beautifully.
Lots of volume and fullness.
Very versatile for protective and low-manipulation styles.

Common challenges

High shrinkage hides length.
Dryness — coils lose moisture quickly.
Single-strand knots and tangles at the ends.
Fragile bends break if detangled roughly or when dry.

How to care for 4A hair

Detangle in sections with conditioner in, starting from the ends and working up.
Use the LOC or LCO method to layer water-based leave-in, oil and cream.
Deep condition every wash day; use gentle heat if moisture doesn't seem to absorb.
Keep ends protected with low-manipulation styles between wash days.
Stretch hair before bed with twists or braids to prevent knots.
Choose gentle cleansers and avoid washing more often than your scalp needs.

Styles that suit 4A hair

Wash-and-go coils with gel
Finger coils and coil-outs
Two-strand twists and twist-outs
Bantu knots and knot-outs
Puffs and buns (use soft ties, not tight bands)
Braids, twists and wigs as protective styles

Shrinkage: High — about 50–70%.

How hair typing works

The 1–4 / A–C chart sorts hair by the shape strands take on their own: 2 is wavy, 3 is curly and 4 is coily, and the letters go from looser (A) to tighter (C). It is a widely used convention rather than a scientific scale — researchers who measured curl objectively found it varies continuously, which is why many heads sit between two types.

Our hair type quiz scores eight observations of clean, product-free hair: wet strand shape, the pencil test, curl width, shrinkage, a single dry strand, a product-free wash, root-to-end pattern and how fast hair dries out. Use your type to set styling expectations and handling habits; use porosity, density and strand thickness to choose products.

4A at a glance

	4A
Family	Coily
Pattern	Small, defined S-coils
Curl width	Knitting needle or coffee stirrer
Typical shrinkage	50–70%
Common needs	Layered moisture (LOC/LCO); protect ends

See the full chart of all nine types.

Frequently asked questions

What does 4A hair look like?

Small, tightly wound coils with a visible S-pattern, about the width of a knitting needle or coffee stirrer. The coils are clearly defined when wet and clump together nicely with a moisturizing styler.

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

4A coils keep a rounded S-pattern you can see. 4B hair bends in sharp, zig-zag angles instead of round coils and looks less defined without styling.

Why does 4A hair feel dry so fast?

Coily strands have many bends, which makes it harder for scalp oil to coat them and easier for moisture to escape. Layering a water-based leave-in with an oil or cream to seal it in usually helps moisture last longer.