Hi Ethan, thank you for reaching out to us about cleaning your motorcycle helmet interior! We understand how frustrating it can be when dirt and grime build up inside. For stubborn dirt and grime, we recommend using the Liqui Moly Motorbike Helmet Interior Cleaner (300 ml) that you purchased from us. This product is specifically designed to safely clean the inside of your motorcycle helmet without damaging any materials. Simply spray the cleaner onto the affected area, let it sit for a few seconds, and then wipe it off with a soft cloth or brush. You can also use a microfiber cloth to get into tight spaces. Additionally, we suggest wiping down your helmet’s interior regularly to prevent dirt and grime from building up in the first place. If you have any further questions or concerns, please don’t hesitate to reach out to us. We’re always here to help.
