Structure, length, porosity – every hair is different. But the main types are: curly, wavy, straight, curly and afro hair. Of course, straight hair can be thick or thin. Curly or afro hair also comes in many different textures, either waves or curls. Not sure what your hair type is? Follow that old adage of barbershops: Wash your hair, comb it the way you want (with a side or center parting). Then let them air dry. Once dry, the hair will reveal its true hair type.

L’Oréal Professional is a brand of the professional products division of L’Oréal Group. loreal professional offers a range of professional hair color, formed, styling and home haircare products. The products are divided into two categories: in-salon and home care products.


That’s it? You found? Great! Now let’s see how to take care of it!

The 4 types of hair structure and their subtypes

There are 4 types of hair structure:

Type 1 – stiff

Type 2 – wavy

Type 3 – curly

Type 4 – curly or afro.

Hair type and structure can be subdivided into subtypes: a, b and c, depending on the structure of the crimps, density, porosity, width and size of the hair. For example, a person with loose curls would be type 3a and a person with tight curls would be type 3b.

Straight hair: its appearance and proper care

Type 1, the straight type, is straight hair that does not curl. This type of hair is also the shiniest, longest lasting and strongest. It is also exceptionally difficult to curl this type of hair because the oil from the scalp spreads easily from the scalp to the ends, making it one of the oiliest and most difficult hair types to style.

It is subdivided into 3 genres:

  • 1a – Naturally stiff
  • 1b – Smooth with volume
  • 1c – Straight with some visible S waves (normally on the back of the neck or the temples)

How to take care of straight hair?

Straight hair stays naturally smooth and straight, allowing for versatile styling. Try a keratin smoothing balm to give your hair a shine and protect it from humidity. Straight hair can suffer in terms of volume. To add volume, dry your hair upside down and use a round brush. Between washes, use a dry shampoo to prevent hair from becoming oily.


Wavy hair: its appearance and appropriate care

Type 2, the wavy type, is a hair structure that is between the straight type and the curly type. Its shine is between that of wavy hair and that of curly hair. Wavy hair is also more likely to become curly than straight hair. Some wavy hair types are easy to style, while others are more resistant to blow-drying.

It is subdivided into 3 genres:

  • 2a – Wavy in loose and stretched S
  • 2b – Shortened and well-defined S-waves
  • 2c – S waves with some spiral curls

How to take care of wavy hair?

As this type of hair is between straight hair and curly hair, it is quite temperamental to style. Indeed, this type of hair can be difficult to model, but their natural texture is superb in the natural way. This type of hair can fall like straight hair, so it is important to maintain its volume at the roots. Wavy hair is prone to frizz. So be sure to use products that retain moisture. To keep wavy hair soft, flowing, and frizz-free, use a shampoo and conditioner that contains fortifying ingredients. Sulfate-free and keratin-based shampoos and mild moisturizing conditioners are ideal for keeping this type of hair manageable while avoiding damage.

Curly hair: its appearance and appropriate care

Type 3, the curly type, is curly hair that looks like the letter “S” or “Z”. This type of hair is usually voluminous. It is very weather dependent and can become frizzy and damaged easily. Proper care is needed to maintain healthy, well-defined curls.

It is subdivided into 3 genres:

  • 3a – Big loose spiral curls.
  • 3b – Bouncy ringlets
  • 3c – Tight corkscrew curls

How to take care of curly hair?

Curly hair has a natural volume and texture that makes it perfect for styling. However, curly hair is prone to frizz and can easily dry out, causing breakage. It’s important to keep hair hydrated and revitalized, especially those that help with split ends. Keratin masks are among the most effective hair treatments out there. You can also use formulas with avocado oil, keratin protein, silk protein and white carnation oil to nourish and hydrate hair. Guaranteed result! Whether your hair is lightly curly or heavily curly, reduce frizz by using leave-in shampoos and conditioners that help hair retain moisture.

Curly or frizzy hair: its appearance and appropriate care

Type 4, the curly or afro type, is the hair rolled up or even very twisted. It is often brittle with a very high density. This hair type shrinks when wet because it has fewer cuticle layers than other hair types. It is more susceptible to damage than other hair types.

It comes in 3 forms

  • 4a – Tight S-loops
  • 4b – Very Tight Z-Curls
  • 4c – Mostly Z curls, tightly knotted and less defined

Tip: Sleep with a silk pillow or scarf to lock in moisture.

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