Type 4: Coily Hair Types (Complete Hub)

Type 4 hair has the tightest curl pattern, forming coils and zigzag shapes. It ranges from tight S-coils (4A) to virtually no defined pattern (4C).

Type 4 hair is characterized by tight curvature, high shape memory when hydrated, and often substantial length shrinkage when dry. Patterns may read as S-coils, Z-angles, or very tight helices depending on sub-type and viewing conditions.

Care conversations emphasize moisture layering, low-manipulation styling, and protection during sleep. Mechanical damage from dry combing or harsh brushing is a major preventable source of breakage across 4A, 4B, and 4C.

Take the hair type quizOpen hair type chartHow to determine your typeScience & referencesMen's hub

The three coily sub-types (4A, 4B, 4C)

Each card links to a full guide with care, product, and hairstyle articles. Skim characteristics to see which code matches your wash-day hair most often.

4A

4A Hair: Tight, Defined S-Pattern Coils

Type 4A hair features tightly packed coils with a visible S-pattern when stretched. The coils are roughly the circumference of a crochet needle, creating dense, springy texture with significant volume.

Typical cues

  • Tight S-pattern coils (crochet needle-sized)
  • Dense, springy texture
  • Defined curl pattern when wet
  • Significant shrinkage (up to 75%)

Common challenges

  • Extreme dryness
  • Breakage
  • Shrinkage masks true length
Read full 4A Hair guide →
4B

4B Hair: Z-Pattern Coils with Sharp Angles

Type 4B hair bends in sharp Z-shaped angles rather than the S-curves seen in other types. It is densely packed and extremely versatile for styling, with less defined curl pattern than 4A.

Typical cues

  • Z-shaped angular pattern
  • Less defined curl pattern than 4A
  • Densely packed strands
  • Wire-like to cottony texture

Common challenges

  • High breakage risk
  • Extreme dryness
  • Difficult to measure true length
Read full 4B Hair guide →
4C

4C Hair: Tightest Coils with Maximum Shrinkage

Type 4C is the tightest hair type in the classification system, with coils so tight they may appear to have no defined pattern at all. It experiences the most shrinkage (up to 75%) and requires the most moisture of all types.

Typical cues

  • Tightest possible coil pattern
  • May appear to have no defined pattern
  • Up to 75% shrinkage
  • Extremely fragile and delicate

Common challenges

  • Maximum shrinkage
  • Extreme fragility
  • Requires constant moisture
Read full 4C Hair guide →

Understanding Type 4 hair in depth

How 4A, 4B, and 4C differ

4A often shows a visible S-pattern when a strand is gently stretched. 4B shifts toward sharper angles with less repeating loop visibility in photographs. 4C may show minimal repeating loop to the naked eye when dry yet coherent structure when wet and conditioned.

All three can be extremely dense; visual volume does not always predict strand fineness—fine Type 4 hair still needs gentle handling.

Moisture, sealing, and climate

Layer water-based hydrators with sealants when your environment supports it; in very humid air, heavy occlusives can feel limp, while arid climates may require richer leave-ins.

Pay attention to ends and perimeter, where friction from collars and scarves concentrates.

Professional and cultural context

Salon services and protective styles should be chosen with curl geometry and fragility in mind. If you experience tenderness, scaling, or patchy loss, prioritize dermatology evaluation alongside cosmetic care.

Related comparisons

Frequently asked questions — Type 4 (Coily)

Does Type 4 hair grow slower?
Growth rate at the scalp is broadly similar across types for healthy follicles; shrinkage and breakage at older lengths make retention look slower. Protective routines address length retention, not follicle speed.
What is the difference between coily and kinky?
Both are informal English descriptors; Andre Walker’s Type 4 is the structured umbrella used on this site. Language preferences vary by community and region.
How do I reduce single-strand knots?
Regular trims, smooth detangling on soaked conditioned hair, satin linings, and avoiding high-friction dry manipulation all help. Severe knotting may warrant a stylist’s assessment of ends and shape.