11 months old baby having little bit reddish rashes(small and big sized but not water filled rashes) on whole body from yesterday. .what we can do for this

A. Then currently you can apply calamine lotion which is what is going to be good enough that is going to help in subsiding all kind of rashes it’s a good thing that it is not having water inside so it is just a heat crash or something to apply this three or four