Hair Types Explained: A Comprehensive Guide

The Science of Hair Typing

Hair typing is a system for classifying hair based on its texture, curl pattern, porosity, and other inherent characteristics. This classification helps in understanding how hair behaves, what it needs, and how best to care for it. While widely used, it's important to remember that these systems are generalizations, and individual hair can exhibit characteristics from multiple types.

Andis Hair Typing System

The most commonly recognized hair typing system was developed by Andre Walker, focusing primarily on curl pattern. It categorizes hair into four main types, with further sub-classifications for each:

• Type 1: Straight Hair
• Type 2: Wavy Hair
• Type 3: Curly Hair
• Type 4: Coily Hair

Within each type, sub-classifications (A, B, C) denote the looseness or tightness of the curl, with 'A' being the widest pattern and 'C' being the tightest.

Type 1: Straight Hair

Straight hair has no natural curl pattern. The follicles are typically round, allowing the hair to grow straight out of the scalp.

• Type 1A: Often described as "pin-straight," it is very fine and soft, with a natural tendency to be oily due to the ease with which scalp oils (sebum) travel down the hair shaft.
• Type 1B: Still straight, but with more body and a slight bend. It is often medium-textured, holding curls better than 1A.
• Type 1C: Generally thick and coarse. While still straight, it may have a few isolated waves and can be resistant to curling.

Straight hair is often the most resilient to damage and reflects light well, giving it a natural shine. However, it can also struggle with volume and can become greasy quickly.

Type 2: Wavy Hair

Wavy hair forms an "S" shape and is a middle ground between straight and curly hair. The follicles are typically oval.

• Type 2A: Characterized by loose, stretched-out "S" waves that are fine and easy to straighten. It tends to lack volume at the roots.
• Type 2B: Waves are more defined and can range from medium to thick. Frizz can be a concern, and it may be more resistant to straightening than 2A.
• Type 2C: Features well-defined "S" waves that start closer to the roots. It is usually coarse and prone to frizz, with some tighter waves that can border on curls.

Wavy hair often benefits from lightweight products that enhance waves without weighing them down. Proper hydration is key to managing frizz.

Type 3: Curly Hair

Curly hair forms distinct loops and spirals, ranging from loose curls to tight, springy coils. The follicles are typically oval to nearly flat.

• Type 3A: Characterized by large, loose curls with a circumference similar to a thick piece of chalk. These curls are often shiny and easily defined.
• Type 3B: Features springy, well-defined curls that are tighter than 3A, with a circumference similar to a Sharpie marker. This type can experience more shrinkage and frizz.
• Type 3C: Very tight, corkscrew-like curls with a circumference similar to a pencil. This hair type exhibits significant volume and density, but it is also highly prone to dryness and tangles due to its cuticle structure.

Curly hair often requires significant moisture to maintain its health and definition. "Curl-friendly" styling techniques, such as scrunching and diffusing, can help enhance and preserve curl patterns.

Type 4: Coily Hair

Coily hair, often referred to as kinky hair, has very tight, small, and highly textured curl patterns. The follicles are typically flat and grow in an elliptical shape, causing the hair to grow in a zig-zag pattern or very tight coils directly from the scalp. Despite its appearance, coily hair can be very fine and fragile, though it has high density.

• Type 4A: Characterized by tight, S-pattern coils that are clearly visible when stretched. It has a high density and significant shrinkage, often appearing much shorter than its actual length.
• Type 4B: Features a more "Z" shaped zig-zag pattern rather than a distinct curl. The coils are tighter and less defined than 4A, making individual strands harder to distinguish. This type is very prone to shrinkage and dryness.
• Type 4C: The tightest and most densely packed coil pattern, often with no defined curl pattern without manipulation. It experiences the most shrinkage and is the most delicate hair type, making it highly susceptible to breakage if not properly cared for.

Coily hair thrives on intensive moisture and gentle handling. Protective styling, deep conditioning treatments, and leave-in conditioners are crucial for maintaining its health, preventing breakage, and promoting growth. Detangling should always be done with care, ideally when the hair is wet and saturated with conditioner.

Other Important Hair Characteristics

Beyond curl pattern, other factors significantly influence hair care.

Hair Porosity

Hair porosity refers to your hair's ability to absorb and retain moisture. It's determined by the condition of your hair's cuticle, the outermost layer of the hair shaft.

• Low Porosity: Cuticles are tightly closed, making it difficult for moisture to penetrate. Products tend to sit on the hair. Benefits from lightweight, penetrating oils and heat treatments to help open the cuticle.
• Medium Porosity: Cuticles are looser, allowing for good moisture absorption and retention. This hair type is often considered the easiest to manage.
• High Porosity: Cuticles are raised and often damaged, leading to rapid moisture absorption but also rapid moisture loss. Requires rich, heavy products to seal in moisture and regular deep conditioning.

Hair Texture (Strand Thickness)

This refers to the thickness of individual hair strands, not the overall density of your hair.

• Fine: Individual strands are very thin and barely visible. Prone to oiliness and can lack volume.
• Medium: Strands are neither fine nor coarse. This is the most common texture and is generally strong and resilient.
• Coarse: Individual strands are thick and have a wide circumference. Can be resistant to chemical treatments and tends to be dry and frizzy.

Hair Density

Hair density refers to the number of individual hair strands per square inch on your scalp. It is distinct from strand thickness.

• Low Density: Fewer hair strands, resulting in a scalp that is easily visible.
• Medium Density: Average number of hair strands.
• High Density: Many hair strands, resulting in a thick, full look where the scalp is difficult to see.

Characteristic	Description
Curl Pattern	Shape of hair (straight, wavy, curly, coily)
Porosity	Hair's ability to absorb/retain moisture
Texture	Thickness of individual strands (fine, medium, coarse)
Density	Number of hair strands per square inch

By understanding these various characteristics, you can tailor your haircare routine, select appropriate products, and employ styling techniques that best suit your unique hair, leading to healthier, more manageable results. Watermans Hair offers ranges of products designed to nourish and strengthen all hair types, from fine and straight to thick and coily.