In short: on a motorcycle helmet, the removable internal foam (cheek pads, crown liner) is hand-washed in warm water or in a mesh bag at 30 °C (86 °F). The outer shell never goes in the machine — damp cloth + mild soap. The visor is cleaned with warm water only, never solvents. A helmet that has fallen must be replaced regardless of cleaning.
At a glance
Removable foam (cheek pads, crown liner) -- hand wash warm water + mild soap, or machine in mesh bag at 30 °C (86 °F) synthetic, flat dry.
Outer shell -- damp microfibre cloth + mild soap. Never machine wash, never alcohol or solvents.
Visor -- 5 min soak in warm soapy water, wipe with microfibre. No abrasive cloth.
Chin strap -- damp cloth. Check fabric condition (frayed = replace helmet).
After impact -- mandatory helmet replacement (ECE 22.06), no cleaning restores safety.
Piece-by-piece protocol
| Piece | Method | Frequency by usage |
|---|---|---|
| Cheek pads (removable) | Hand warm water + mild soap, or machine 30 °C (86 °F) mesh bag | Daily: 2-3 months — Weekend: 1-2/year — Touring: after long trip |
| Crown liner (removable) | Hand warm water + mild soap, or machine 30 °C (86 °F) mesh bag | Daily: 2-3 months — Weekend: 1-2/year |
| Outer shell | Damp microfibre cloth + mild soap | After each ride if insects |
| Visor | 5 min soak warm soapy water + microfibre | After each ride if dirty |
| Chin strap | Damp cloth + mild soap, air dry | Monthly |
| Vents | Soft toothbrush + compressed air | Quarterly |
| Non-removable foam (older models) | Disinfectant spray + extended airing | Monthly |
Model specifics
Modular helmets and some premium full-face models (Shoei Neotec, Schuberth) have model-specific disassembly mechanisms. Always consult your model’s manual — clips and tabs are not universal.
Step-by-step
1. Remove the internal foam
On most modern helmets: cheek pads pull forward (rear retention clips), the crown liner unclips at the back then at the temples. On jet or modular helmets, disassembly often goes through an internal zip. Photograph before disassembly.
2. Wash the foam
Hand option: wash in warm water (30-35 °C / 86-95 °F) with mild soap or mild shampoo, no twisting. Rinse in clean water until all soap is gone.
Machine option: place foam in a mesh laundry bag, synthetic 30 °C (86 °F), low spin (600 rpm). Group with other motorcycle gear for efficient cycle.
Drying: flat on a terry towel in a ventilated room. Never tumble dry (deformation), never on a radiator (degrades internal adhesive).
3. Clean the outer shell
Microfibre cloth dampened with warm water + mild soap (neutral shower gel works). Focus on insect marks — soak the cloth 30 seconds on the spot to soften before wiping. Avoid abrasive cloths, alcohol-based wipes, any solvent: they damage clear coat and paint.
4. Clean the visor
Remove it if possible (quick-release mechanism on most modern models). Soak 5 minutes in warm soapy water. Wipe gently with a clean microfibre cloth, circular motion. For Pinlock anti-fog treated visors, follow manufacturer recommendations — some treatments are fragile.
5. Strap, vents, inside the shell
Chin strap: damp cloth + mild soap. If fabric is frayed or discoloured, that’s overall wear sign — consider replacement.
External vents: soft toothbrush to dislodge stuck insects, compressed air can (at distance) for internal channels.
Inside the shell (after foam removal): lightly damp microfibre wipe, never soaked. Let air dry completely before reinstalling foam.
Disinfectant sprays: useful?
Dedicated sprays (Muc-Off Visor & Helmet, Demon Helmet Cleaner, BO Bike Visor) are complementary to regular cleaning, not a replacement. They:
- Deodorise foam between full washes
- Sanitise after a sweaty or rainy ride
- Quick-clean visor without full disassembly
Use: spray at 15-20 cm on clean surface, leave 2-5 minutes (per product), wipe or air out per instructions. Do not spray on internal EPS foam (between shell and comfort foam).
When to replace a helmet
Per ECE 22.06, a helmet must be replaced in several cases independent of cleaning.
After any impact
A fall, even an empty helmet dropping off the handlebars. Internal EPS foam deforms at impact and no longer absorbs correctly. Always replace, regardless of visual appearance.
Age
Manufacturers generally recommend replacing a helmet every 5 years or so, or every 7 years per certain models -- foam and shell age even unused.
Crumbling foam
If comfort foam crumbles on disassembly, or the liner tears, it's age or moisture. The helmet has lost its precise fit: replace.
Cracked or delaminated shell
Any crack, even superficial, paint that bubbles, clear coat peeling in patches: the internal composite is compromised. Immediate replacement.
Common mistakes
- Machine washing or tumble drying the outer shell -- not an error, an act that ruins the helmet. No circumstances.
- Cleaning the visor with an alcohol wipe -- destroys anti-scratch and anti-fog treatments. Warm soapy water only.
- Drying foam in the tumble dryer or on a radiator -- heat deforms comfort foam and unsticks adhesive bands. Flat air drying.
- Wringing the foam to dry it -- deforms the internal structure. Press gently between two terry towels.
- Reusing a helmet that has fallen, thinking it's intact -- the EPS foam did its job once, it won't absorb a second impact. Mandatory replacement.
Read also: wash a textile motorcycle jacket, wash motorcycle gloves, remove tar and grease stains.