Riding Helmet KED (M52-58cm)

I purchased this helmet after my child used it about 10 times. I am an adult woman and have been using it about once a week for a year.
There are no major scratches, but there are small scratches.
I wiped the inside with alcohol, but I couldn't completely remove the dirt from the fabric rubbing areas.
Please only purchase if you understand this.
Accessories: Instruction manual, storage bag