Although white hair is characteristic of aging, colorless hair strands can appear at any age even while you’re still in high school or college. If you’re a teenager or in your 20s, you might find one or more strands of white hair.....Continue Reading Full Details Here.
Here are some of the causes of gray hair at an early age.
Environmental conditions
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For instance, pollution and ultraviolet (UV) rays from the sun may cause oxidative stress, which has been linked to various forms of aging (like wrinkles). This can lead to a buildup of hydrogen peroxide in hair follicles that can cause grays.
Vitamin or mineral deficiency
Any deficiencies of vitamin B-6, B-12, biotin, vitamin D, or vitamin E can contribute to prematurely going gray. Similarly, deficiencies in minerals like calcium, copper, iron, protein and zinc can also contribute to graying hair earlier than usual.
Smoking
Smoking is known to cause oxidative stress in the lungs, skin, hair, and even nails by creating a surge of free radicals. When these accumulate in the hair they target the pigment-producing cells and destroy hair color.
Chemical hair dyes and hair products
Shampssos, Chemical hair dyes and even hair products, can contribute to premature hair graying. Many of these products contain harmful ingredients that decrease melanin. Hydrogen peroxide, which is in many hair dyes, is one such harmful chemical. Excessive use of products that beach hair will also eventually cause it to turn white.

