your result

Mixed 4A/4B Hair

Your hair mixes 4A's small, rounded S-coils with 4B's sharper zig-zag bends.

Mixed result · S-coils and Z-bends

A 4A/4B result means some of your hair forms small, defined S-coils while other parts bend in sharper Z-shapes. Often the 4A pattern shows at the front and sides and the 4B pattern at the crown, but the mix can appear anywhere. Both textures are coily, dense and high-shrinkage, so they share most care needs.

The 4B sections usually look less defined and feel drier and more fragile at the bends. They benefit from extra moisture, sealing and very gentle detangling. The 4A sections clump more easily and may only need a styler to look defined. If you style everything the same way, the 4B areas can look puffy next to defined 4A coils — which is completely normal, not a sign of damage.

Most people with this mix find twist-outs, braid-outs and protective styles the easiest way to get a consistent look, and they treat the 4B sections as the guide for how much moisture the whole head needs.

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/4B hair can need very different routines.

Strengths

Dense, full volume.
4A sections define easily; 4B sections add body and fullness.
Holds stretched and protective styles very well.
Shapes well into puffs, afros and sculpted updos.

Common challenges

Uneven definition between the two patterns.
Very high shrinkage, especially in 4B areas.
Dryness and breakage at the bends in 4B sections.
Tangles at the nape and crown.

How to care for 4A/4B hair

Moisturize in sections and give 4B areas extra leave-in plus an oil or butter to seal.
Detangle the 4B sections first, while they're wettest and full of conditioner.
Shingle product through 4B areas or twist them to bring out definition.
Deep condition every wash day; use a steamer or heat cap if products sit on top.
Keep hair stretched between washes to cut down on knots.
Protect edges by keeping ponytails and braids loose at the hairline.

Styles that suit 4A/4B hair

Two-strand twists and twist-outs
Bantu knots and knot-outs
Shingled wash-and-go
Puffs and buns with soft ties
Box braids or knotless braids with low tension
Wigs with your own hair braided and moisturized underneath

Shrinkage: About 50–75%.

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/4B at a glance

	4A	4B
Family	Coily	Coily
Pattern	Small, defined S-coils	Sharp Z-shaped bends, less defined
Curl width	Knitting needle or coffee stirrer	Angles rather than round coils
Typical shrinkage	50–70%	60–75%
Common needs	Layered moisture (LOC/LCO); protect ends	Extra moisture; shingling or twists for definition

See the full chart of all nine types.

Frequently asked questions

Is it normal to have 4A and 4B hair at the same time?

Yes. Many coily heads combine patterns, often looser at the front and tighter at the crown. The typing system describes individual patterns, so a mixed result simply reflects how real hair grows.

Which part of my hair should I base my routine on?

Usually the 4B sections, since they tend to be drier and more fragile. Use the same products everywhere but adjust the amount — more in the 4B areas, less where 4A coils already clump easily.

How can I get my 4B sections to look as defined as my 4A coils?

Apply leave-in and gel to very wet hair and shingle it through small sections, or use two-strand twists or braid-outs. Stretched styles make both patterns look alike.