# What Causes Hair to Turn Gray Instead of White?

> The answer is gray hair, caused by a reduction (not a full stop) in melanin production. Texas barber exam hair science answer.

Canonical: https://fadejunkie.com/practice/hair-science/gray-hair-reduction-in-melanin  
Last updated: 2026-08-11

**The answer is gray hair. A slowdown, not a complete stop, in melanin production is what turns hair gray.**

Gray strands still carry some scattered melanin, which is why gray hair can vary in tone from client to client. Hair only goes fully white once melanin production stops entirely — reduced production gets you gray, not white, which is the distinction this question is testing.

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