Hair is a filamentous structure of keratin protein that grows from follicles found in the dermis. Hair has many functions, including insulation, protection, and as a sensory organ. Hair is made up of keratin proteins which are tough and insoluble.

What is the difference between hair and fur?

Hair is the thin, usually cylindrical strands that grow from the skin of humans and animals. Fur is a thick, shaggy coat of hair that covers most mammals. Hair is found on all people and animals. It grows from follicles in the skin. Hair has a hollow core with three layers: an inner layer of medulla, an intermediate layer called cortex, and an outer cuticle layer. The cortex contains pigment cells called melanocytes which give hair its color. Fur is found on mammals such as dogs, cats, bears, lions and seals. Fur is made up of coarse hairs that are usually longer than human hair but shorter than bristles on a brush or broom. Fur can be straight or curly depending on the animal's species and environment where it lives.

Why do people have hair?

Hair is a protective mechanism for the human body. It can be used to protect the head from sunburn, shield it from cold winds, and keep sweat out of one's eyes. It also has an aesthetic function in terms of social interaction. Hair provides protection for the human body by shielding it from sunburn, keeping sweat out of one's eyes, and shielding it from cold winds. Hair also has an aesthetic function in terms of social interaction as people use hair to look more attractive or hide their appearance if they are not feeling well.

Why does my hair get greasy after only one day?

Greasy hair is a common problem for many people. There are many factors that can contribute to greasy hair, including hormonal changes, diet, and stress. Hormonal changes such as puberty or pregnancy can cause your body to produce more oil than usual. This can lead to greasy hair because the oil on your scalp will not be able to escape through the pores in your skin and will instead sit on top of your head. Diet also plays a role in how often you have greasy hair. For example, if you eat foods high in fat or sugar it may increase the amount of oil produced by your scalp. Stress is another factor that can lead to greasy hair because it causes increased production of hormones like cortisol which increases oil production on the scalp. Greasy hair is a common problem for many people with different causes ranging from hormonal changes, diet, and stress. Hormonal changes such as puberty or pregnancy can cause an increase in the amount of oil produced by your scalp which leads to greasy hair because the oil cannot escape through pores in your skin but instead sits on top of your head. Diet also plays a role in how often you have greasy hair because eating foods high in fat or sugar may increase the amount of oil produced by your scalp due to increased hormone production like cortisol caused by stress which increases oil production on the scalp.

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