Dropping a helmet from a short height causes minor damage to your helmet. Major drops or an accident can damage the EPS liner of your helmet. Damage to the EPS liner, which absorbs the energy, can compromise the safety ability of your helmet.

What happens if I drop my bike helmet?

They may not break, and they may not show exterior signs of damage, but the tensile strength of the fibers in that location decreased, and just like our egg, at the second or third hit in the same place, it will crack open. If we assume that our helmets start at 100%, each drop or hit of substance eats away at that.

Can you use a helmet after you drop it?

For starters, most people are aware that you must replace a helmet after any crash where your head hit. The foam part of a helmet is made for one-time use, and after crushing once it is no longer as protective as it was, even if it still looks intact.