As a hair care expert with over a decade of experience in the field, I've often been asked about the changes in hair texture as we age, particularly why grey hair tends to feel coarser. The reasons for this are multifaceted and involve a combination of biological, chemical, and physical changes that occur within the hair follicle and along the hair shaft.

Biological Changes
The most significant biological change that leads to grey hair is the reduction in melanin production within the hair follicle. Melanin is the pigment responsible for the color of our hair. As we age, the cells that produce melanin, known as melanocytes, gradually decrease in number and functionality. This results in the hair losing its color and turning grey or white.

Chemical Changes
Alongside the loss of color, there are also chemical changes that occur. The hair cuticle, which is the outer protective layer of the hair, becomes thinner and more brittle with age. This is due to a decrease in the production of keratin, a structural protein that makes up the majority of the hair shaft. The reduction in keratin makes the hair more susceptible to environmental damage and breakage.

Sebum Production
One of the key reasons why grey hair may feel coarser is the reduction in sebum production by the oil glands, or sebaceous glands, in the scalp. Sebum is a natural oil that helps to keep the hair and scalp moisturized and healthy. As we age, these glands produce less sebum, which can lead to drier and more roughly-textured hair.

Hair Follicle Distortion
Another factor to consider is the potential for hair follicle distortion. Constant pulling out of hair, whether through styling or other means, can cause damage to the hair follicle. Distorted follicles can lead to hair that is more crinkly and coarse in texture.

Environmental Factors
Environmental factors also play a significant role. Prolonged exposure to the sun, wind, and other elements can cause the hair to become dry and coarse, regardless of color. Grey hair, being more devoid of its natural oils, is even more vulnerable to these environmental assaults.

Nutritional Deficiencies
Lastly, nutritional deficiencies can affect the health and texture of the hair. A diet lacking in essential vitamins and minerals can lead to hair that is dry, brittle, and coarse. Ensuring a balanced diet with adequate nutrients is crucial for maintaining healthy hair.

In conclusion, the coarseness of grey hair is a result of a complex interplay of biological aging, chemical changes within the hair structure, reduced sebum production, potential follicle damage, environmental exposure, and nutritional factors. Understanding these factors can help in developing strategies to maintain the health and manageability of grey hair.

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The reason why grey hair seems coarser is because oil glands produce less sebum when you're older, which results in drier and more roughly-textured hair. ... This is because constant pulling-out of hair can distort your follicles, resulting in more crinkly hair."read more >>