Have you ever bought a product that worked wonders for someone else but did nothing for your hair? The most likely reason is that you and that person have different hair types. Understanding your hair type is the foundation of every effective hair care routine.
Learning how to know your hair type goes beyond just recognizing whether your hair is straight or curly. It involves understanding your hair's texture, density, porosity, and elasticity—all of which influence how your hair behaves and what it needs to stay healthy.
In this guide, we will walk you through the widely used hair type classification system and help you identify your exact hair type so you can make smarter choices about products and treatments.
The Hair Type Classification System
The most commonly used hair type system classifies hair into four main categories, each with three subcategories. This system was originally developed by celebrity hairstylist Andre Walker and has since become the standard reference for hair typing.
Type 1: Straight Hair
Straight hair lies flat from root to tip without any natural curl or wave pattern. It tends to be the oiliest hair type because sebum from the scalp travels down the hair shaft without any bends to slow it down.
Type 1A: Completely flat and fine with no body or volume. This hair type is very soft and can be difficult to hold curls.
Type 1B: Straight with medium texture and slightly more body than 1A. This is the most common straight hair subtype.
Type 1C: Straight and coarse with some natural volume. It can have slight bends but no true wave pattern.
Type 2: Wavy Hair
Wavy hair falls between straight and curly. It has a natural S-shaped pattern that can range from loose beach waves to more defined waves close to curls.
Type 2A: Fine, loose waves that are barely noticeable. Easy to straighten but also easy to enhance into more defined waves.
Type 2B: Medium-textured waves that follow an S-shape pattern starting from the mid-length. Prone to frizz.
Type 2C: Well-defined, thick waves that start close to the roots. Can sometimes form loose spiral curls. Most prone to frizz among wavy types.
Type 3: Curly Hair
Curly hair has a definite curl pattern that springs back when pulled and released. Curly hair tends to be drier because the natural oils from the scalp have difficulty traveling down the spiral shape of the strand.
Type 3A: Big, loose spiral curls about the diameter of a piece of sidewalk chalk. Shiny and well-defined with some frizz.
Type 3B: Medium spiral curls about the diameter of a marker. Tends to be voluminous and springy.
Type 3C: Tight corkscrews about the diameter of a pencil. Very dense and prone to shrinkage—hair may appear much shorter than its actual length when dry.
Type 4: Coily Hair
Coily hair has very tight curl patterns that may appear as tight coils or zigzag shapes. Despite its appearance of strength, coily hair is actually the most fragile hair type and requires the most gentle handling.
Type 4A: Tight S-shaped coils about the diameter of a crochet needle. Has a defined curl pattern when wet.
Type 4B: Z-shaped coils that bend at sharp angles rather than curling. Less defined pattern and more dense.
Type 4C: The tightest coil pattern with almost no defined curl visible. Very fragile, extremely prone to shrinkage, and requires the most moisture.
Beyond Texture: Other Factors That Define Your Hair
Hair Density
Hair density refers to how many individual strands you have per square inch of scalp. You can check your density by parting your hair and looking at how much scalp is visible. If you can barely see your scalp, you have high density. If you can clearly see your scalp through your hair, you have low density.
Density is different from thickness. You can have fine hair strands but very high density, or thick individual strands with low density. Understanding this distinction helps you choose the right volume-building or weight-reducing products. For more on this topic, explore our guide on hair thickness and hair density improvement.
Hair Porosity
Porosity determines how well your hair absorbs and retains moisture. It is a critical factor in choosing the right products and treatments. To learn how to test your porosity, read our detailed guide on how to check hair porosity.
Hair Elasticity
Elasticity measures how much your hair can stretch before it breaks. Healthy hair can stretch up to 50 percent of its original length when wet and return to normal without breaking. Low elasticity indicates damage or protein deficiency.
To test elasticity, take a wet strand of hair and gently stretch it. If it stretches and bounces back, your elasticity is good. If it snaps easily or feels mushy and does not return to its original shape, your hair may need protein treatments.
How to Determine Your Hair Type at Home
The best way to identify your hair type is to observe your hair after washing it with a gentle shampoo and letting it air dry without any products. This gives you the truest picture of your natural hair pattern.
Step 1: Wash your hair with a sulfate-free shampoo. Do not use conditioner or any styling products.
Step 2: Gently squeeze out excess water with a microfiber towel. Do not rub or scrunch.
Step 3: Let your hair air dry completely. Do not touch or manipulate it while it dries.
Step 4: Once fully dry, examine your hair in a mirror. Compare your natural pattern to the descriptions above to find your closest match.
Keep in mind that many people have more than one hair type on their head. The hair at your temples might behave differently from the hair at the crown or nape. This is completely normal.
Get a Professional Hair Analysis
Our dermatologists at DenceSpot use advanced diagnostic tools to analyze your hair type, density, porosity, and scalp health—giving you a complete picture of what your hair needs.
Book Your Free ConsultationChoosing Products Based on Your Hair Type
Once you know your hair type, selecting the right products becomes much easier:
Straight hair (Type 1): Use lightweight shampoos and conditioners. Avoid heavy oils and butters that can weigh your hair down. Volumizing products work well for fine straight hair.
Wavy hair (Type 2): Use medium-weight products. Mousse and light gels help define waves without weighing them down. Anti-frizz products are essential, especially for 2B and 2C types.
Curly hair (Type 3): Moisture is key. Use sulfate-free shampoos, rich conditioners, and curl-defining creams or gels. Deep condition weekly. Consider our tips on how to get rid of frizzy hair for managing curl frizz.
Coily hair (Type 4): Maximum moisture is essential. Use heavy creams, butters, and oils. Co-washing (washing with conditioner only) can help retain moisture. Handle with extreme care to prevent breakage.
Common Hair Type Mistakes to Avoid
One of the biggest mistakes people make is following generic hair advice without considering their hair type. Using products designed for straight hair on curly hair—or vice versa—can lead to dryness, buildup, frizz, or limp results.
Another common mistake is confusing hair type with hair condition. Damaged hair may behave differently from healthy hair of the same type. If your hair has been heat-damaged or chemically treated, its current behavior may not reflect its natural type. Allow new growth to come in and observe that for a more accurate assessment.
For a complete approach to caring for your specific hair type, explore our guide on how to take care of hair.
Frequently Asked Questions
How many hair types are there?
There are four main hair types: Type 1 (straight), Type 2 (wavy), Type 3 (curly), and Type 4 (coily). Each type is further divided into subtypes A, B, and C based on the tightness of the pattern, giving a total of 12 subtypes.
Can my hair type change over time?
Yes, hair type can change due to hormonal shifts, aging, pregnancy, medications, and chemical treatments. Many people notice their hair becoming curlier or straighter at different stages of life. Puberty and menopause are common times for hair type changes.
Why is knowing my hair type important?
Knowing your hair type helps you choose the right products, styling techniques, and care routines. Using products designed for your specific hair type leads to better results and healthier hair overall. It also prevents common issues like buildup, dryness, or frizz.