what is the outer layer of the hair shaft?
medulla
The outer layer of the hair shaft is called the cuticle. The cuticle is made up of thin, overlapping scales that form a protective barrier around the inner layers of the hair.
To find information about the outer layer of the hair shaft, you can start by searching on reputable websites that provide information on hair anatomy, such as medical or cosmetology websites. You can use search engines like Google or Bing and enter keywords like "hair shaft anatomy" or "hair cuticle." This will lead you to articles or resources that explain the different layers of the hair shaft, including the outer layer or cuticle. Remember to verify the information from multiple sources to ensure accuracy.