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Bio 2 by photos290125 is a document available to read on EtoBox.

What is Bio 2 about?

The document outlines the structure of hair and the hair growth cycle, emphasizing the importance of understanding hair properties for cosmetologists. It details the two main parts of hair (root and shaft), the types of bonds in the hair cortex, and the role of melanin in hair color. Additionally, it describes the three phases of hair growth: anagen, catagen, and telogen, including their characteristics and duration.

Author

photos290125

Language

EN