There are more reasons for beard whitening, such as with age, albinism, vitiligo and other factors. 1. age: with age, the pigment cells at the root of the hair follicle will gradually stop producing melanin, and the beard will appear white. 2. albinism: due to genetic mutations, can lead to melanin biosynthesis disorders, which will show the eyes, skin, hair and other parts of the pigmentation of hypopigmentation or loss of the situation. 3. Vitiligo: Vitiligo can cause hair follicle melanocyte damage leading to pigment loss, thus appearing beard hair white.