How To Clean Your Helm?

Take regular dishwashing soap and water, and with a stiff brush, simply clean in the inside liner. Let it sit out all day to dry and you're done. I've seen suggestions to put it in the dishwasher (!) and to use products like the one above, but this is the simplest and seems to work. Most of what builds up in the helmet is oil from your face/hair and salt from the sweat. These come out easily with soap and warm water.

More about the dishwasher suggestion: It definitely works if done right, since it gets all over; it pretty much sits in the same spot so it shouldn't be knocked around or anything.
Another idea is to place the helmet in a carefully padded bag or even something thick like a sweatshirt/sweater in a washing machine- make sure the washing machine is set to no higher then 40 degrees celsious (104 fahrenheit), make sure it is set to "delicates" or "synthetic" and cancel the final spin. Every machine is a little different so no guarantee, but as long as the helmet does not rotate too hard in the washing machine and inside a well protective cloth it comes out smelling clean and looking new. Allow to air dry. It may take up to 2 days. For those with VERY Arai/Shoei high-end helmets, you may want to still consider doing this process manually.

Note - The pads inside might need to be re-glued after surviving the process.

Let it air dry (away from the sun) for at least 24 hours.
Try using Helmet Fresh

AGV Blade AirNet

Karakteristik

Shell Painted HIR-TH (high resistant termoplastik) resin
Jumlah cangkang kerang ukuran 2 Front
Sistem Ventilasi dan ventilasi atas terbuat dari lebar lubang di cangkang dilindungi oleh metalik extractors grid dan lateral.
Fabrics Dry Comfort dengan perawatan higienis Inside padding Removable dan dapat dicuci ( termasuk neckroll)
Visor Clear and anti-scratch polycabonate City 11 visor
Shield Mekanisme "Double Rail" XQRS (Extra Quick Release System): perisai dan penggantian puncak tanpa alat hanya dalam beberapa detik
Retensi Sistem metrik Mikro penyesuaian gesper

AGV Helm Batok M9

Karakteristik

Shell Painted HIR-TH (high resistant termoplastik)resin
Number of shells 1 shell size
System Ventilasi Intake udara depan dan rear extractors
Fabrics Dry Comfort dengan perawatan higienis Inside padding Sepenuhnya dilepas dan dapat dicuci (termasuk neckroll)
Visor Clear and anti-scratch polycarbonate Street 1 visor
Retention System Quick release buckle