
[Rider Protection] How Dirty Is the Liner Inside Old Helmet?
on 2025-11-06
Every time you put on your helmet, you probably don’t realize it’s actually much dirtier than you think. In Hong Kong’s hot and humid weather, every ride means your helmet liner silently absorbs sweat, oil, dust, exhaust fumes, and even residues from hair products. Over time, that soft, comfortable padding turns into a damp breeding ground packed with bacteria and fungus.
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Every time you put on your helmet, you probably don’t realize it’s actually much dirtier than you think. In Hong Kong’s hot and humid weather, every ride means your helmet liner silently absorbs sweat, oil, dust, exhaust fumes, and even residues from hair products. Over time, that soft, comfortable padding turns into a damp breeding ground packed with bacteria and fungus.
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