Hair Structure: Layers

MEDULLA: The medulla is the innermost layer of thefollicle but isn’t always found in vellus hair. It’s formed of looselyconnected, keratinised cells with air spaces in between. The medulla determinesthe sheen and colour tones of the hair by light reflection.CORTEX: This middle layer forms the bulk of the hair. Itcontains melanin that gives hair its …

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