Scalp hair can exist in numerous different types, and your hair may even fit in more than one hair type. The most common and frequently used categorizing system though, groups hair into four different types: straight, wavy, curly, and coily. These can be further sub-categorized depending upon the variation of their curl.

Type 1: Straight

Type 1 hair lacks any natural curls, and strands fall straight from root to tip. The texture of the hair is usually fine, soft, and silky, with the presence of high amounts of natural oil that gives it a luster full, shiny appearance. The absence of curls, however, adds to the flatness of the hair and makes it appear of lesser volume than it is. This hair type shows the most resistance to all kinds of curling and is generally more resilient to any damage. 

Recommended hair care:

As this type of hair tends to be oily, products with extra added essential oils such as heavy serums and hair butter are generally not recommended. Similarly, frequent washing of the scalp can also cause overproduction of scalp oil and should not be a part of the routine. Textured sprays and dried shampoos, on the other hand, make excellent products for this category.

Hair Type 2: Wavy hair

Wavy hair generally has a gentle, tousled texture and an ill-defined soft S-shaped curl or wave. Mostly the hair strands are fairly straight from the roots to the eye level, from where the transition to wavy hair begins. As wavy hair is not overly oily or dry but lies somewhere in between, it may be prone to develop frizz in damp weather. This type of hair may also require a little effort to straighten but demonstrates more compliance when curling.

Recommended hair care:

To prevent the flattening of the unique waves, creamy and oil-based products should be avoided. To assist in styling light mousse or hair gels can generally be employed. These soft curls or beachy waves can further be defined with the help of anti-humid products such as salt spray or hard water. A diffuser can also be used in damp weather for a similar effect and to also remove the extra frizz.

Type 3: Curly

Curly hair forms well-defined S curls and is more prone to tangling and frizz. It’s usually fuller and more defined in the middle and towards the eye level and then spirals softly towards the end. As the cuticles do not lay flat, curly hair usually does not exhibit a shiny appearance similar to straight hair. This type of hair gives a voluminous look without any effort, however, it shows resistance to straightening. 

Recommended hair care:

Products that define the natural curls further enhance the alluring look of curly hair. Adding adequate moisture such as with aloe vera or shea butter etc. can achieve this goal. However, sulfur and silicone-containing hair products should be avoided, as they only temporarily tame the frizz but cause lasting damage like drying and breakage. 

Hair Type 4: Coily

The most delicate type of hair is coily hair, which forms comparatively smaller rings than curly hair and has a higher density. Extremely fragile, even harsh brushing is prone to cause damage, coily hair has very fine strands that are densely packed together and that need extra special care to thrive.

Recommended hair care: 

Moisturizing products such as deep conditioners, creams, and different types of hair butter enhance and promote natural coils. Coconut oil, along with hair waxes are also popular among individuals sporting such hair.