Depends on the use you make of it. Our recommendation for those people who use the motorbike 3-4 days a week is as follows:
HELMET
Use Helmet Deodorant after each use and Helmet Cleaner once a week
LEATHER EQUIPMENT
Use Leather Cleaner quarterly and Leather Protector each time you want to enhance the waterproofing of the garment and always after cleaning it.
TEXTILE EQUIPMENT
Use Textile Cleaner once a quarter and Textile Protector each time you want to enhance the waterproofing of the garment and always after cleaning it.