I don't know if it cleaned, but even if it did, the smell it leaves afterwards is at least disgusting. It smells like sour sweaty gym towel that has been left in a bag for at least 2 days!!!
Not only do I not know what to do with the helmet now, but I will not only not buy it again, but I will not even reuse it!!!
If someone wants it, they can come and I will give it to them. Nah, what do I care about them.

Quite a good product for its price. It cleans well a helmet with non-removable inner lining and had years-old sweat stains. It leaves a very pleasant lemon scent inside the helmet that lasts quite a while.

Very mediocre product. It has a pleasant scent but it requires many repetitions. Clearly, it does not clean. I definitely will not buy it again.

I have bought two more and I am still trying to understand if it actually cleans or just leaves a clean scent.. probably the latter

As a first impression because the helmet is brand new so it hasn't had a chance to get dirty, it has a strong but pleasant smell.