Hair is a filamentous biomaterial that is made up of proteins, in particular keratin. It has a complex structure which has been investigated using various techniques, including light and electron microscopes, as well as X-ray diffraction. Hair is composed of two distinct structures, the medulla and the cortex. These are surrounded by the cuticle which is a layer of dead cells. The medulla contains the majority of the fibre mass, while the cortex is a tightly packed region with the keratin coiled-coil phase. All of this is surrounded by the cuticle, which protects the medulla and the cortex from the environment.
Hair has significant social significance for humans, primarily as an indicator of biological sex. It can also serve a practical purpose, such as insulating the body from cold air or sweat evaporation. In addition, hair colour can be used as a marker of age in males (as indicated by baldness), and it may also be associated with ethnicity.
Although there are many reasons why we choose to color our hair, it is important to remember that dyes can be damaging to the health of your strands. It is therefore a good idea to use a nourishing hair dye with minimal ammonia and a low pH. Alternatively, you can try a natural hair dye such as turmeric or beetroot.
If you have dry and brittle hair, you can apply honey to the scalp to improve its condition. You should avoid washing your hair with hot water as it strips the protective oils from your strands. Instead, wash your hair with a temperature that is slightly warmer than your body’s natural skin tone. You can also use an oil-rich hair mask to help restore your tresses.
Choosing the right hairstyle is one of the best ways to make your face look more appealing. A flattering hairstyle can draw the eye away from certain parts of your face, such as a large forehead, and it can add dimensions to a round face. It can also hide a long nose or a narrow jawline.
You can also add volume to thin hair by using a volumizing shampoo or adding a hair extension. You can also add a touch of flair by using an embellished headband or a hat with feathers.
There are several factors that determine the color of your hair, including genetics and environment. For example, some people have naturally blonde hair, while others have dark hair. Other factors include hormone levels and diet. For instance, some people consume more iron than others, which can contribute to lighter hair.
In order to maintain the health of your hair, it is recommended to shampoo with a mild shampoo that is free of harsh chemicals. You should also limit how often you shampoo your hair, as over-washing can lead to a loss of moisture and shine. Additionally, you should avoid brushing your hair with a metal comb as it can damage the follicles.