HAIR COLORING IS MY DNA HAIR MEDULLA 

The medulla is the innermost layer of the hair shaft. While its exact function is not fully understood, it is generally believed to contribute to the overall structure and thickness of the hair. The medulla is composed of loosely packed cells and is absent in all hair types. It is more commonly found in thicker, coarser hairs, such as those on the scalp or facial hair, while finer hair may lack a medulla entirely.

Unlike the outer cuticle and the cortex, which play more defined roles in protecting the hair and providing strength and elasticity, the medulla is often regarded as less critical. Its presence or absence does not significantly affect the hair’s behavior or its ability to withstand external stressors. However, in thicker hair, the medulla may play a role in providing additional structure or contributing to the hair’s appearance of volume.

In terms of chemical composition, the medulla is similar to other parts of the hair, primarily consisting of keratin, though its cellular arrangement is more irregular. This loose organization within the medulla means that it does not offer the same degree of strength as the more compact cortex.

Although the medulla’s precise biological function remains a subject of research, it is clear that its presence varies between individuals and hair types. Its contribution to hair structure is subtle, and it is not typically a focus in most hair care or treatment regimens. Nonetheless, understanding the basic composition of the medulla helps provide a more complete picture of the overall structure of hair.