You spend a fortune on fancy shampoos and pricey masks only to end up with a frizzy mess or a flat disappointment. Stop guessing what your strands need. Identifying your specific hair type changes your entire routine and saves your wallet from marketing traps.
The Andre Walker Hair Typing System
Most stylists use a specific numbering system to categorize hair. It ranges from one to four. These numbers represent the shape of your hair fiber as it grows out of your scalp.
Type 1 describes straight hair. Type 2 covers waves. Type 3 represents curls. Type 4 includes coils or kinks. Knowing your number helps you choose the right base for your products.
Each number also has subcategories labeled A, B, and C. These letters tell you the diameter of your pattern. An A is a wide pattern while a C is much tighter and more compact.
Type 1: The Straight Truth
Type 1 hair lacks a natural curl or wave. It lies flat from the root to the tip. This hair type reflects light better than others, so you likely enjoy a natural shine without much effort.
Oil travels easily down straight strands from your scalp. This means you might fight grease more often than your curly friends do. You probably want to avoid heavy butters that weigh your hair down.
1A hair is very fine and thin. 1B has a bit more body and volume. 1C is coarse and sometimes stubborn when you try to use a curling iron on it.
Type 2: Riding the Waves
Type 2 hair forms an S shape. It is not quite straight but it is not a full spiral either. You might notice that your hair looks straight when wet but develops a bend as it dries.
Waves often struggle with frizz because the cuticle sits slightly more open than straight hair. You need products that provide light moisture without flattening your natural texture. Salt sprays work wonders here.
2A waves are fine and easy to straighten. 2B waves start a few inches from the roots and have more definition. 2C waves are thick and border on loose curls.
Type 3: The Spiral Secret
Type 3 hair consists of clear, defined curls. These strands form springs or corkscrews. Your hair likely has plenty of volume but also loses moisture quickly because of the bend in the hair shaft.
You should treat these curls with care. Overwashing leads to dryness. Leave in conditioners become your best friend because they help the curl maintain its shape throughout the day.
3A curls are large like sidewalk chalk. 3B curls are the size of a permanent marker. 3C curls are tight and dense, resembling the circumference of a pencil.
Type 4: The Coily Legend
Type 4 hair features a very tight pattern. It often looks like Z shapes or very small tight coils. This hair type is beautiful and versatile but the most fragile of all the categories.
The natural oils from your scalp have a hard time traveling down these zig zag patterns. This makes your hair naturally dry. You need thick creams and oils to seal in hydration and prevent breakage.
4A hair has a visible S pattern when stretched. 4B hair follows a Z pattern with sharp angles. 4C hair is the tightest and experiences the most shrinkage when it dries.
Measuring Mineral Density and Hair Width
Your hair type involves more than just the shape. You must consider the diameter of each individual strand. This is often called hair texture or width.
Fine hair is thin and delicate. You can barely feel a single strand between your fingers. It breaks easily and loses its shape if you apply too much product.
Medium hair is the most common. It feels like a cotton thread. Coarse hair feels thick and strong. It stays in place well but requires longer processing times for dyes or chemical treatments.
You can test this easily at home. Take a single strand from your brush and lay it on a plain surface. Compare it to a piece of sewing thread. If it is thinner than the thread, you have fine hair.
Evaluating Hair Porosity
Porosity measures how well your hair absorbs and retains moisture. Think of the cuticle as a set of shingles on a roof. Their position determines your porosity level.
High porosity hair has gaps in the cuticle. It absorbs water quickly but loses it just as fast. Low porosity hair has tightly packed cuticles that resist moisture like a raincoat.
The float test offers a quick way to check this. Drop a clean, product free hair strand into a glass of water. Wait five minutes and see where it lands.
| Result | Porosity Level | What It Means |
|---|---|---|
| Floats at the top | Low Porosity | Hair resists moisture and products sit on the surface. |
| Hovers in the middle | Medium Porosity | Hair absorbs and holds the right amount of moisture. |
| Sinks to the bottom | High Porosity | Hair drinks up water but dries out almost instantly. |
Determining Your Hair Density
Density refers to the number of hairs on your head rather than the thickness of the strands. You can have fine hair but high density. This creates a confusing situation for people trying to buy products.
Look in the mirror with your hair hanging naturally. Try to see your scalp without moving your hair around. If you see your skin easily, you have low density.
If you see a little bit of scalp, you have medium density. If you cannot see your scalp at all, you have high density. This helps you decide how much product to use at once.
The Scalp Grease Factor
Your scalp health dictates how often you should wash your hair. Some people produce oil so quickly they feel like a human oil slick by noon. Others go a week without a drop of grease.
An oily scalp usually pairs with fine or straight hair. Dry scalps often accompany thick, curly, or coily hair. Check your roots on the second day after washing to see your natural state.
If your roots are flat and shiny, you have an oily scalp. If they feel itchy or tight, you have a dry scalp. Normal scalps look clean on day two without any irritation.
How to Use Your Hair Type Data
Once you know your number, letter, porosity, and density, you become a hair genius. You can stop buying products because a celebrity told you to do so. You can make choices based on science.
A person with 2A hair and low porosity needs lightweight, liquid based products. A person with 4C hair and high porosity needs thick, oil based sealants to keep the hair from snapping.
Stop fighting your natural texture. Trying to make flat hair voluminous or curly hair perfectly straight every day causes long term damage. Work with what you have for the healthiest results.
- Low porosity hair needs heat to open the cuticle during conditioning.
- High porosity hair benefits from cold water rinses to seal the cuticle shut.
- Fine hair needs protein to stay strong.
- Coarse hair needs softening ingredients like emollients.
Frequently Asked Questions
Can my hair type change over time?
Yes, your hair type changes due to hormones, age, or significant health shifts. Puberty, pregnancy, and menopause often alter the shape of your hair follicles. Chemical treatments like perms or relaxers also permanently change your pattern until new hair grows in.
Is it possible to have multiple hair types on one head?
Most people actually have more than one hair type. You might have Type 3 curls near your neck but Type 2 waves around your face. Treat the most dominant type or use different products on specific sections to balance the look.
Does hair length affect my hair type?
Length does not change your actual hair type, but it changes how the pattern looks. Long hair adds weight which pulls waves and curls down, making them look looser. Shorter hair removes that weight and allows your natural bounce to return.
Now you have the tools to identify your hair type like a professional. Look in the mirror and examine those strands today. Your hair will thank you for finally understanding what it wants.
