Types of curly hair refer to the classification system that describes the pattern, diameter, and texture of each distinct curl shape, from a loose beach wave through to a tightly packed coil. The system most widely used in hair care divides all textured hair into three broad categories: wavy (type 2), curly (type 3), and coily (type 4). Each category is further divided into subcategories A, B, and C based on how tight or defined the individual curl pattern is.
Understanding which category your hair falls into matters practically, not just for product selection but for how you handle your hair when it is wet, how often you wash it, how you dry it, and what daily habits either protect or disrupt your curl pattern over time. In the Australian context, where humidity varies dramatically between coastal Queensland and dry inland regions, and where UV exposure is significantly more intense than in most markets where curl care advice is written, the standard international guidance for each type often needs adaptation to suit local conditions.
This guide covers the complete curl type system, explains the characteristics and specific needs of each subcategory, and goes beyond basic classification to cover what actually affects curl behaviour in practice, including porosity, hair density and texture, the scalp environment, and the environmental factors that are particularly relevant for Australians with textured hair.
What Are the Different Types of Curly Hair?
The curly hair type system divides all textured hair into three main categories and nine subcategories. Understanding the full picture before identifying your own type prevents the frustration of placing yourself in a single category that does not fully explain why your hair behaves the way it does.
Forms an S-shaped wave pattern, typically starting mid-shaft. The loosest of the curl categories. Natural scalp oils can travel down the strand more easily, making this the least dry curl type. Prone to going flat at the root and frizzing in humidity.
Forms a defined corkscrew or ringlet pattern with visible spring and circumference. Intrinsically drier than type 2 because the curl's twists and turns limit natural oil distribution along the strand. Frizz-prone and reactive to environmental humidity.
The tightest curl patterns, from a defined tight coil to a dense Z-shaped or zigzag pattern. Driest and most fragile of all curl types. Experiences significant shrinkage when dry. Requires the most intensive moisture management and the gentlest handling of all types.
Within each category, A subcategories are the loosest, B subcategories are tighter, and C subcategories are the tightest. The progression from 2A to 4C represents a continuous spectrum rather than fixed, separate types. Most people sit somewhere in the middle of this spectrum and will find that their hair shares characteristics of more than one neighbouring subcategory.

Type 2 Wavy Hair: What It Looks Like and What It Needs
Wavy hair is the point on the curl spectrum where the hair forms an S-shaped wave pattern rather than lying completely flat. It is often the most misunderstood curl type because many people with wavy hair have spent years treating it as straight hair without understanding that it has specific curl-type needs of its own.

Type 3 Curly Hair: Springy Coils and What Changes Them
Type 3 hair is characterised by a visible, defined corkscrew or ringlet pattern with enough spring tension that the curl bounces back when stretched and released. The most significant practical implication of type 3 hair is moisture loss. Because natural scalp oils struggle to travel down a corkscrew-shaped strand through its twists and turns, type 3 hair is intrinsically drier than type 2 hair even when scalp oil production is entirely healthy. Supporting overall scalp health matters considerably for type 3 hair because a healthy scalp producing consistent sebum provides the best possible starting moisture at the root zone, even if that moisture does not reach the ends without additional conditioning support.

Type 4 Coily Hair: The Driest and Most Fragile Type
Type 4 hair has the tightest curl patterns across the entire spectrum, characterised by coils or zigzag patterns that often begin at the root rather than mid-shaft and that can result in significant shrinkage, sometimes 50% or more of the hair's actual length. Type 4 hair is the most fragile of all curl types because the tight bends and turns along each strand create points of mechanical stress that make the hair more susceptible to breakage during handling, detangling, and styling. Natural scalp oils face the most resistance in travelling down a tightly coiled strand, which means that type 4 hair is often chronically dry at the mid-lengths and ends even when the scalp is producing adequate sebum.
How to Identify Your Curl Type at Home
Identifying your curl type requires seeing your natural pattern with as little interference as possible from products, heat damage, or past chemical processing. The most reliable method uses a clean, product-free starting point.
- Wash with a gentle sulfate-free shampoo to remove existing product residue that might be altering your natural pattern.
- Apply a lightweight conditioner from mid-lengths to ends, rinse thoroughly, and apply nothing else after washing.
- Allow the hair to air dry completely without touching it. Scrunching, tousling, or handling the hair while wet will alter the pattern and skew your reading.
- Observe the shape of individual strands across different sections. S-shapes indicate type 2. Full corkscrews or ringlets indicate type 3. Tight coils or a zigzag pattern indicate type 4.

Why Most People Have More Than One Curl Type
A common source of confusion in curl type identification is that the system implies a single consistent pattern across the entire head. In practice, most people with textured hair have more than one curl pattern present simultaneously, and this is entirely normal rather than a sign that something is wrong with the hair.
The hair at the crown tends to have a tighter pattern than the hair at the nape, temples, or underneath. The outermost layer of hair often has a different pattern from the layers underneath, which typically curl more loosely because of how they are positioned relative to the scalp and how they receive moisture from sebum. Chemical or heat processing applied unevenly over time can affect different sections of the hair differently.
When identifying your curl type for practical purposes, identify the predominant pattern that appears most often and most consistently across your head, and note any significantly different sections that may need slightly different product application in those specific areas. A single product routine can address most multi-type heads effectively, with the understanding that application technique and product quantity may need to vary between sections of the same head.

Curl Type vs Hair Density and Strand Texture
Curl type describes the shape of each individual strand. It does not describe how many strands you have per square inch (density) or how thick each individual strand is (texture). These are three entirely separate characteristics, and understanding the difference prevents the frustration of following a routine that is correct for your curl type but wrong for your density or strand texture.
Hair density refers to how many individual strands are packed together on the scalp. High-density hair looks and feels thick regardless of whether the individual strands are fine or coarse. Low-density hair can look thin even if each individual strand is quite thick. A person with type 3B curls and low density needs a completely different product approach from a person with type 3B curls and high density. The first needs lightweight products that do not weigh down the limited number of strands and reduce visible volume. The second can carry richer, heavier products without the hair appearing flat or overloaded.
Strand texture describes the width of each individual hair strand. Fine strands have a small diameter and are easily weighed down by heavy products. Coarse strands have a large diameter, tend to be more resistant to moisture absorption, but can handle and often need richer conditioning products. Medium strands sit between the two extremes.
A person with type 4A coils and fine strands who follows a standard type 4 routine using thick butters and heavy oils will often find that their hair feels greasy, limp, and undefined. This is because standard type 4 guidance assumes medium to coarse strand texture. The same curl type in a fine-strand combination needs a lighter, more layered approach to achieve the same defined result.

Hair Porosity and Curl Type: The Second Layer of Identification
Hair porosity describes the hair's ability to absorb and retain moisture and is determined by the structure of the cuticle layer that wraps around each strand. Porosity is a separate characteristic from curl type but interacts with it significantly in determining how your hair behaves, which products it responds to, and what your routine needs to include.
Understanding the hair growth cycle clarifies why porosity matters so much for textured hair. As each strand progresses through its growth cycle, cumulative environmental exposure, heat use, and chemical treatments progressively raise the porosity of older sections of the hair. For type 3 and 4 hair where the ends are already the driest section because of limited natural oil distribution, high porosity at the ends compounds the dryness problem significantly and often requires a dedicated sealing step after moisture is applied to slow moisture loss back out of the strand.
To identify your porosity at home, take a clean, dry strand and place it in a glass of room temperature water. Low porosity hair floats. High porosity hair sinks relatively quickly. Medium porosity hair floats briefly then slowly sinks. This gives a useful starting indication for understanding which products will be most effective for your hair alongside its curl type.

How Australian Climate Affects Your Curl Type Day to Day
Standard international guidance for each curl type is typically produced for northern hemisphere temperate climates with moderate humidity and UV conditions. Australian conditions differ substantially in ways that affect curl behaviour at every level, and this is one of the most significant gaps in global curl care content for Australian readers.
Building a Curl Care Routine by Type
The foundations of a curl care routine are the same across all types: gentle cleansing that does not strip the cuticle, thorough conditioning that replaces moisture lost during washing, product application while the hair is wet and at maximum moisture absorption, and a drying method that minimises friction and cuticle disruption. What varies by type is the intensity, frequency, and layering of these steps.
Type 2 (Wavy) Routine Principles
- Sulfate-free shampoo two to three times per week
- Lightweight conditioner from mid-lengths to ends only, never at the scalp or root zone
- All styling products applied to soaking wet hair by scrunching upward
- No touching or disturbing the hair while it dries to preserve wave clumps
- Light weekly clarifying wash to prevent product accumulation at the root
- Anti-frizz approach prioritised year-round in humid coastal Australian areas
Type 3 (Curly) Routine Principles
- Wash two to three times per week, alternating gentle cleansing and co-washing
- Weekly deep conditioning mask as a non-negotiable step to maintain moisture levels
- All products applied generously to soaking wet hair using raking or praying hands technique to encourage curl clumping
- Gel cast technique for clearest definition: apply styler, allow to dry fully, then break cast gently
- Microfibre towel or cotton t-shirt instead of standard bath towel for all drying
- Scalp health support as a foundation for moisture quality in new growth
Type 4 (Coily) Routine Principles
- Wash once to twice per week to avoid stripping limited natural moisture
- LOC or LCO method (liquid, oil, cream in layered sequence) applied section by section to wet hair
- Detangling on wet, well-conditioned hair only, using wide-tooth comb or fingers starting at the ends
- Protective styles such as braids, twists, and buns to reduce daily manipulation and breakage risk
- Intensive deep conditioning mask used weekly, not as an occasional treatment
- Sealing with a heavier butter or oil after moisture application to slow moisture loss from the strand
Scalp-First Curl Care at Hair Folli
Hair Folli's approach to curl care starts at the scalp. The quality of every new hair strand that emerges, including its moisture balance, structural integrity, and natural lustre, begins with the scalp environment in the weeks and months before that strand becomes visible. Hair Folli's Hair Growth Shampoo and Conditioner uses a sulfate-free formulation gentle enough for the dry scalp conditions common in type 3 and 4 hair, while effectively removing the product accumulation that wavy type 2 hair experiences from frequent use of curl-enhancing stylers. For Australian curl types dealing with hard water mineral build-up alongside product accumulation, pairing a periodic clarifying step with a nourishing conditioner addresses both barriers to defined, healthy-looking curls over time.
Shop Hair Growth Shampoo and Conditioner

What Ingredients to Look For and Avoid by Curl Type
Knowing your curl type is only useful when combined with the ability to evaluate whether a product's ingredients are appropriate for that type. The following ingredient guidance provides a practical filter for product selection across the three main curl categories.
Type 2 Wavy Hair
Look for: Humectants such as glycerin and panthenol that attract and retain moisture at a lightweight level, aloe vera as a hydrating and frizz-smoothing ingredient, and silk proteins that smooth the cuticle without weight.
Avoid: Heavy silicones such as dimethicone and cyclomethicone that coat the strand and resist removal, thick creams and butters designed for coily hair, and products marketed specifically for high-density or coarse-textured hair. These will weigh down the wave pattern, reduce volume, and cause the hair to appear flat and greasy at the root zone.
Type 3 Curly Hair
Look for: Slip-providing conditioning agents such as cetyl alcohol and behentrimonium chloride that allow easy detangling, lightweight oils such as jojoba or argan for moisture sealing without heaviness, and curl-enhancing polymers in gel-format stylers that define the coil without flaking or crunchiness.
Avoid: Sulfates in everyday shampoos, which strip the natural moisture that type 3 hair is already limited in, and heavy waxes that coat without penetrating and accumulate into build-up that dulls curl definition over time.
Type 4 Coily Hair
Look for: Emollient-rich butters including shea and mango butter for moisture sealing on very dry strands, penetrating oils such as coconut oil and olive oil that reduce protein loss from the hair shaft, and glycerin-based humectants in the liquid layer of a LOC routine to attract moisture before sealing it in.
Avoid: High-alcohol denatured alcohols (listed as alcohol denat or SD alcohol) that dry the hair surface rapidly and increase frizz in already-dry coily strands. Water-based formulas with no sealing step are rarely sufficient for type 4 hair on their own and typically need to be followed by an oil and cream layer to retain the moisture delivered.
Common Mistakes That Work Against Your Curl Pattern
Several very common hair care habits actively work against the curl pattern regardless of type, and correcting them often produces more visible improvement than adding new products to an existing routine.
Frequently Asked Questions
Conclusion
Understanding the types of curly hair is not about placing your hair in a fixed category but about gaining a practical starting point for building a routine that works with your natural pattern rather than fighting against it. The type 2, 3, and 4 system with its A, B, and C subcategories provides that starting point, while additional factors including porosity, hair density and strand texture, the health of the scalp environment, and the specific climate conditions of your Australian location add the depth needed to move from a generic curl routine to one that produces consistent results in real-world conditions.
The most consistent finding across all types of curly hair is that moisture management is the central challenge, and that the intensity of that challenge increases as the pattern gets tighter. Type 2 needs lighter moisture support and frizz management. Type 3 needs regular deep conditioning and careful wet application technique. Type 4 needs the most intensive sealing and protective approach of all. Across all types of curly hair, knowing what you are working with, understanding your secondary characteristics including porosity and density, and adapting standard advice to suit Australian climate conditions is what separates a routine that delivers consistent, reliable results from one that produces unpredictable outcomes regardless of the products being used.
Ashly Labadie specialises in scalp health, flat hair, and long-term hair performance. She has tested 30+ hair care products available in Australia across different hair types and climates, tracking results over weeks and months rather than after first use. She works in collaboration with the Hair Folli Editorial & Research Team to align real-world insights with formulation science and current research.
Hair Folli is an Australian hair wellness brand founded in 2010 and trusted by over 183,000 customers worldwide. Content is developed using a scalp-first, evidence-informed approach, drawing on botanical research, formulation expertise, and real-world usage insights. Each article is reviewed to ensure accuracy, practical relevance, and alignment with current understanding of hair and scalp health. No article is designed to exaggerate results or make claims beyond what the evidence supports.