Hair Growth Water

Proved Original Packed Well 100% Satisfied By Daraz Mall Each strand of hair is made up of the medulla, cortex, and cuticle.[4] The innermost region, the medulla, is an open and unstructured region which is not always present.[5] The highly structural and organized cortex, or second of three layers of the hair, is the primary source of mechanical strength and water uptake. The cortex contains melanin, which colors the fiber based on the number, distribution and types of melanin granules. The shape of the follicle determines the shape of the cortex, and the shape of the fiber is related to how straight or curly the hair is. People with straight hair have round hair fibers. Oval and other shaped fibers are generally more wavy or curly. The cuticle is the outer covering. Its complex structure slides as the hair swells and is covered with a single molecular layer of lipid that makes the hair repel water.[4] The diameter of human hair varies from 0.017 to 0.18 millimeters (0.00067 to 0.007

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