Hair changes. Age has effect on color, thickness.
D000505:Alopecia / Q000209:etiology* / Q000473:pathology / Q000517:prevention & control; D005260:Female; D006197:Hair / Q000502:physiology*; D006200:Hair Color; D006801:Humans; D008297:Male; D010859:Pigmentation Disorders / Q000209:etiology; D012737:Sex Factors