Buzz
Hair follicle
Whether hair is curly or straight is determined by the hair follicle
Prone to breakage
Curly hair tends to break more easily than straight hair. Due to the uneven shape of the hair strands, the outer cuticle layer is unevenly coated, with thinner areas compared to others, exposing the inner structure more easily, leading to moisture loss and damage.
Why curly hair tends to frizz
Elliptical nature
The elliptical nature is related to the flattening of the circle. As the degree of ellipticity increases, the degree of curliness of the hair also increases, leading to increased fragility of the hair.
High environmental humidity
Curly hair is particularly prone to moisture because of its natural porosity, which is higher than straight hair. When exposed to a humid environment, it swells due to water absorption, causing the hair to lose its shape and become curlier.
Low environmental humidity
When exposed to very dry air, unprotected curly hair loses moisture more easily, leading to split ends and breakage. The result is unruly and difficult-to-control hair.
Moisturizing
Curly hair, due to its shape, makes it difficult to receive natural oils from the scalp, making it less capable of retaining moisture compared to straight hair. It tends to be drier than straight hair, so moisturizing curly hair is essential for its health and preventing damage.
Hair shine
Natural curly hair often struggles to achieve the same level of shine as typical straight hair because light is absorbed into the twists and turns of the hair or along the frizzed cuticle layer.
Posted by: Tuấn Hùng
Keywords: Understanding curly hair scientifically
