How go relieve Baby's rashes?

Baby just went for her 1 year old Vaccination last Friday, today is exactly 1 week 1 day and she has these rashes (see photo) today which our Pediatrician says it's expected and it should subside within 7 days (just like fever) from today & recommends us to get Bath treatment & KidsClin body mousse from his clinic to relieve the rashes. Just want to seek other opinions on how fellow parents deal with rashes?