The Science Behind Curl Patterns

Chris Grimley, Teaxtured Hair Specialist & Owner of Fusion Hair Co & Texture Curl Academy

Why Do We All Have Different Curl Patterns?

One of the questions I’m asked all the time is, “Why doesn’t my hair look like hers?”, the simple answer is because curls are as individual as fingerprints. No two heads of textured hair are ever exactly the same, and that’s one of the things I love most about working with curls every single day. Your curl pattern is determined long before you ever reach for a shampoo, styling cream or diffuser. It’s written into your DNA. Genetics, the shape of your hair follicle and the structure of the hair itself all work together to create the waves, curls, coils or kinks that make your hair uniquely yours.

Where Does the Curl Come From?

Every strand of hair begins its journey beneath the surface of your scalp inside the hair follicle. Think of the follicle as the blueprint for your curl. Straight hair usually grows from a nice round follicle, allowing the hair to grow evenly. Curly and coily hair, however, grows from follicles that are more oval or slightly flattened. That different shape causes the strand to bend and curve as it grows, creating everything from loose waves to tight coils. Curly hair is also flatter in shape than straight hair, which means every twist and turn creates little points where the hair is naturally more delicate. That’s why textured hair often needs a little more love and a gentler approach to keep it healthy and strong.

Curl Type Is Only One Piece of the Puzzle

We often hear people talking about 2A, 3C or 4C curls, and whilst curl typing can be a helpful starting point, it certainly isn’t the whole story. I’ve worked with countless clients who technically have the same curl pattern, but whose hair behaves completely differently. That’s because there are so many other factors involved. Porosity tells us how easily your hair absorbs and holds onto moisture. Density is simply how much hair you have growing from your scalp. Strand thickness helps determine which products and styling techniques will work best. Elasticity shows us how well the hair stretches and bounces back without snapping. Understanding these characteristics is often far more useful than focusing on curl type alone. It’s the reason your friend’s routine might give you dry, heavy or lifeless curls even though your hair appears similar.

Why Does Textured Hair Need So Much Moisture?

This is probably one of the biggest differences between straight and textured hair. Our scalp naturally produces an oil called sebum, which is designed to keep the hair moisturised and protected. On straight hair, that oil can travel quite easily from root to tip. With curls and coils, though, every bend and every twist slows that journey down. By the time the oil reaches the ends, if it gets there at all, those ends are often crying out for moisture. That’s why textured hair is naturally drier and can become brittle or break more easily if it isn’t properly hydrated. This is why I always say moisture isn’t a luxury for curls, it’s a necessity. Using hydrating shampoos and conditioners, following with a good curl cream and either a gel or mousse to lock that moisture in, and treating your hair gently will make a world of difference to its health, shine and definition.

It’s About Understanding Your Hair

For me, healthy textured hair has never been about chasing somebody else’s curls or following every trend on social media. It’s about understanding your own hair. Once you know how your hair is built, how porous it is, how dense it is and what it needs to stay hydrated, everything starts to make much more sense. You stop fighting your curls and begin working with them instead. Every curl tells its own story. Learning to understand that story is one of the best things you can do for the long-term health of your hair, and when you give textured hair what it truly needs, it will always reward you.