The shimmering hair has become tousled over time... I had straight hair, but now it's curly?!

When I was young, my hair was flowing and shiny, but as I age, there are people whose hair becomes particularly frizzy.

 

You might be puzzled even though you haven't done anything that could damage your hair, like bleaching or using harsh chemicals.

 

In such cases, it could be caused by hair turning from straight to curly as you age.

 

Whether hair is straight or curly depends on the follicle tissue.

 

Hair is formed by the accumulation of cells that divide in the hair follicle.

 

At the very bottom of the hair follicle, there is a tissue called the 'inner root sheath' that helps firmly attach the hair fiber to the scalp, and its shape varies from person to person.

 

When cutting hair and examining the cross-section, the inner root cap of straight hair is round, while that of curly hair is flat.

 

 

The shape of the root cap is genetically determined.

However, there is a possibility that the appearance may change with age. As one gets older, hair and hair follicles also age.

 

At this time, the shape of the root cap may become flatter or asymmetrical compared to before.

 

People with straight hair may become curly, and those who already have curly hair may experience an increase in curliness.

 

Changes in the curvature and lipid composition of hair due to aging also have an impact.

 

The thickness of hair increases after age 10, reaches its thickest point around age 40, and then becomes thinner thereafter.

 

The curvature tends to increase gradually with age.

The degree of curvature change varies for each strand of hair.

 

When the thinning hair takes on various curls, it is said that the hair has become more frizzy than before.

I feel it.

 

In addition, as you age, changes in sex hormone secretion, frequent gray hair dyeing, and other factors affecting hair thickness and composition can also worsen curliness.