The department has banned listed items in an 18-page document including jeans, flip-flops and short skirts, the BBC reported today.
It tells staff to "present a professional image and follow this dress code".
The Home Office says the rules are aimed at those in a public-facing role.
The directions are aimed specifically at Immigration Enforcement's Criminal and Financial Investigation teams and staff are told they may face disciplinary action if they fail to comply.
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Staff have been told that while beards and moustaches are allowed, stubble or an unshaven appearance or stubble are not permitted.
Staff are warned they "must grow facial hair at a time that minimises the period when you present an unprofessional image".
The directions say hair must be neat and styles "that may detract from a professional image are not acceptable".
Meanwhile, a spokesperson told the BBC that there was "no formal dress code" for the Home Office.
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