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Ask Science@lemmy.worldEnglish · 2 years ago

Why does my arm hair know when to stop (re)growing but my "head" hair or beard don't know?

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Why does my arm hair know when to stop (re)growing but my "head" hair or beard don't know?

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Ask Science@lemmy.worldEnglish · 2 years ago

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givesomefucks@lemmy.world
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2 years ago
Hair goes through multiple phases.

It’ll grow for a while, then fall out. Even beard/head hair. It just has a longer grow phase before falling out.

Which is why short hair grows an inch way faster than long hair does.

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