Using dishwashing liquid to clean the outside of your bike helmet is generally safe, as long as you follow some guidelines. Dishwashing liquid is designed to cut through grease and grime, which can be useful for cleaning the exterior of a helmet. Here's how you can do it:
Remove any removable parts: Take off any removable padding, visors, or other parts of the helmet, if possible, before cleaning.
Hand wash: Fill a basin or sink with warm water and add a small amount of mild dishwashing liquid. Stir the water gently to create some suds.
Wipe the exterior: Using a soft cloth or sponge, gently wipe the exterior of the helmet to remove dirt, sweat, and other debris. Avoid using abrasive materials that could damage the helmet's surface.
Rinse thoroughly: Rinse the helmet thoroughly with clean water to remove any soap residue.
Dry properly: Allow the helmet to air dry completely before reassembling any removable parts. Never use a direct heat source like a hairdryer, as excessive heat can damage the helmet's materials.
It's essential to check the care instructions or guidelines provided by the helmet's manufacturer, as some helmets may have specific cleaning instructions that you should follow.
However, when it comes to cleaning the interior of the helmet (e.g., the foam padding or liner), using dishwashing liquid might not be the best option. Dishwashing liquid is designed for dishes and may not be suitable for cleaning materials like helmet liners, which require more delicate care. For the interior, you can use a mild soap or specialized helmet cleaning sprays that are specifically designed for this purpose. Additionally, many helmet liners and paddings are removable and machine washable, but again, refer to the manufacturer's instructions to ensure you clean them properly.
If you're unsure about the cleaning process or if the helmet is particularly soiled or damaged, it's a good idea to contact the helmet manufacturer or a bike shop for guidance. Keeping your helmet clean and well-maintained will help ensure its effectiveness and prolong its lifespan.