👉 Graying is a process in which the skin of an individual's hair follicles and other cells starts to lose their pigment, causing them to become more brownish. This can occur as part of normal aging or due to certain medical conditions like age-related macular degeneration (AMD). Graying also plays a role in various diseases such as cancer, Alzheimer's disease, and Parkinson's disease, where it may be associated with cognitive decline.