90% of the hair's weight is found in which part?

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Multiple Choice

90% of the hair's weight is found in which part?

Explanation:
The main mass of the hair is in the cortex. This thick, central layer contains the keratin fibers that give hair its strength, flexibility, and color, so it accounts for about 80–90% of hair’s weight. The outer cuticle is a very thin protective covering of flat cells, mainly responsible for protection and shine rather than mass. The medulla, when present, is the innermost core and is typically light or absent in many hair types, contributing little to the overall weight. So, the cortex is the part that makes up the majority of hair’s weight.

The main mass of the hair is in the cortex. This thick, central layer contains the keratin fibers that give hair its strength, flexibility, and color, so it accounts for about 80–90% of hair’s weight. The outer cuticle is a very thin protective covering of flat cells, mainly responsible for protection and shine rather than mass. The medulla, when present, is the innermost core and is typically light or absent in many hair types, contributing little to the overall weight. So, the cortex is the part that makes up the majority of hair’s weight.

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