The claim
Hair follicle count and texture are genetic, fixed at birth. Shaving changes nothing — and razors can hurt delicate infant scalp.
科学辟谣 · China Science Rumor-Refutation Platform (CAST & National Health Commission)
科学辟谣平台（中国科协 · 国家卫生健康委员会等主办）. (2019/09/24). 胎毛越剪越密？给宝宝剃头发应待其半岁后. https://piyao.kepuchina.cn/h5/rumordetail?id=prXd
Direct source · Government / official agency · checked 2026-08-02
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