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Ask Science@lemmy.worldEnglish · 1 year 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 · 1 year ago

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1 year ago
This is the correct answer. Here’s a little graphic on the phases.

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