pigmentation
n. C1 Advanced US //ˌpɪɡmənˈteɪʃən// UK //pˌɪɡməntˈeɪʃən// pig·men·ta·tion
n. the natural color of your skin, hair, or eyes. It is caused by a substance in your body called melanin.
n. the process by which skin, hair, or eyes acquire color through the presence of melanin. Refers to the biological mechanism and the resulting physical appearance.
Sunlight can change the pigmentation of your skin.
The doctor explained that the change in her skin pigmentation was a normal reaction to the new medication.
Genetic factors determine the amount of melanin produced, which in turn dictates the individual's natural pigmentation and their susceptibility to UV radiation.