Be gentle. Helmets are generally made of materials that can be damaged by many commonly available cleaners. Petroleum-based solvents or cleaners are especially dangerous. They can damage a helmet so that its protective capabilities are significantly reduced and this damage is often not visible.
For best results, clean the helmet using a soft cloth or sponge, warm water, and mild soap (such as mild dish soap). Allow the helmet to air dry and then store it in a cool, dry place where it won’t get damaged.
Be advised that excessive heat can damage your helmet. For example, in places of direct sunlight, in a dark gear bag, or the interior of a car. All of these places can get hot enough to cause heat damage (damaged helmets will appear to have uneven or bubbly surfaces). Therefore, when not being used for a period of time we recommend that the helmet be placed back into its box or case and stored in a cool, dry place.
If you are concerned about lice infestation, here’s a simple and effective way to get rid of them:
• Place the helmet into an airtight plastic bag for 48 hours. Then, remove the pads and use a soft cloth or sponge, warm water, and mild soap to clean the surface.
• Discard the pads and plastic bag
• Replace pads with new ones (available from giro.co.uk or your local retailer).
Do not use a spray of any kind on your helmet as this may damage the helmet and affect its protective capabilities.