I am 38 and stareted having white hairs in my eyebrows, is this abnormal ?because, hair on my head are black except just a few strands on whole head

White eyebrow : Any number of factors can lead to white eyebrow hairs. Are you using benzoyl or hydrogen peroxide with any regularity on your face? Some mineral deficiencies can cause loss of pigmentation of hair. Like copper deficiency, which can be caused by taking too much zinc, vitamin c and iron. Are you taking any supplements?Make sure they balanced.