Should I use soap when bathing my baby?

In general, I actually don't recommend any soaps at all. Most babies' skins don't really get grimy and dirty. They really don't need to get scrubbed up. Soap serves its purpose, but soaps in general will dry your skin out, and it will take away your skin's natural body oils. And over-washing babies is one of the most common reasons why we have eczema in babies.

Especially if you live in a dry climate, you want to try to preserve that moisture as much as possible. So, I recommend just giving babies little water baths for the first year or 2, and just rinsing them out once a day is totally fine. You can shampoo them with any general baby shampoo maybe twice a week or so. But really they don't need a lot of soap on their body. Unless they get into some motor oil that dad left around, then maybe you might need to, but other than that, no.