Why is it important to have personal belongings in maintaining cleanliness?

If you use other people's toothbrush, razor (especially blades), hairbrush, comb, deodorant, etc., you risk acquiring the germs (normal flora and pathogenic) that person has on their body.

Some diseases or conditions you can "get" (acquire) from using other people's personal hygiene items include:

• chronic skin conditions
• bacterial skin conditions
• any number of bacteria found in the mouth
• bacteria from gum disease
• yeast in the mouth
• nits and lice in the hair
• scalp conditions
• crabs (genital, from using someone else's razor or comb)
• Blood borne disorders from using a used razor
• Blood borne disorders from mouth viruses and bacteria
• Fungal infections -- including from wearing other people's shoes or flip flops
• Skin disorders from using someone's pillow without using a clean pillow protector and pillow case

NOTE: The Words condition, disease, disorder all mean different things. Acute is 'now'. Chronic is long term. Many chronic problems become 'life long'.