0 the process in which cytoplasm (= the substance surrounding a cell nucleus) in the top layer of skin cells changes into, or changes so as to contain, keratin (= a strong natural protein, the main substance that forms hair, nails, horns, feathers, etc.): --
Acne may be a manifestation of a keratinization disorder.
Keratinization is the acquisition of a horn-like character by the epithelial tissue in many parts of the body.
Androgens enhance sebum production and keratinization.
These changes manifest as "dry" patches and keratinization of the conjunctiva.
As cells move from one epithelial layer to the next, they accumulate more and more keratin through a process called keratinization.