Is it better to use mouthwash before or after brushing - Acid erosion sufferer?

They have a lighter mouth wash at the store, it's usually for people with dry mouth (Oasis). This has less of everything. My girlfriend used it for a while and so I tried it once or twice. If you already have a mouth wash, i would recommend you brush, use the mouth wash for a minute then rinse with cold water to get the mouthwash out after it has killed some of the infection.