How long does it take new scalp hair shaft to thicken up?

December 21, 2017
Asked By:notagoodidea2017 in Chicago, IL

When a new hair "sprouts" out and is like 0.5-5mm or so in length it is still thin. How long (generally) does it take for these new emerging hairs to reach their "mature" (for lack of a better word) thickness?

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