Changes

'''Keratinization''' is the process whereby the surface of the [[glans]] and remaining [[preputial mucosa| mucosa]] of the circumcised penis become dry, toughened and hard. <ref>{{REFweb |url=https://medical-dictionary.thefreedictionary.com/keratinization |archived= |title=Keratinization |trans-title= |language= |last= |first= |author-link= |publisher=Medical Dictionary for the Health Professions and Nursing |website= |date=2012 |accessdate=2021-03-17 |format= |quote=}}</ref> Normally, the glans is covered by the [[foreskin]], which moisturizes the area by [[transudation]], keeping the surface of the glans and inner mucosa moist and supple. After circumcision, however, the glans and surrounding mucosa become permanently externalized, and they are exposed to the air and the constant abrasion of clothing. These areas dry out, causing layers of keratin to build, giving the glans and remaining mucosa a dry, leathery appearance and reducing sensation.