The above picture is what a strand of your hair and my hair looks like under a microscope. The hair is a protein filament that grows out of the skin. The protein is called ‘Keratin’.
A strand of hair is made up of 3 layers. The ‘Medulla’ is the innermost layer of the hair. The middle layer of the hair is called the ‘Cortex’. This is the layer that controls water intake and strength. It also contains ‘Metamine’ which is responsible for hair color and shape of each hair strand. The outer layer is the ‘Cuticle’. It is a Scally like layer.
The hair has two parts. The first part is the hair root; the part still in the hair follicle under our skin. This part of the hair is living and that is where the natural hair oils and new growth comes from.
The second part of the hair is the part that we see, our hair strand. This part of the hair is dead. For those of us who intends to grow our hair and retain length, this part of the hair needs attention. And the oldest part of the hair is the tip so pay attention to the hair tip and oil them well.
The hair grows in 3 phases and each hair strand could be in any of these phases. Once the cycle is complete, it restarts and a new strand of hair begins to form.The rate of hair growth is about 0.5 inches per month, That is about 6 inches per year.
Okay! Enough biology for today! Before I stop writing for today, which of these will your hair look like under the microscope?