So far we have used nothing on DS and he is almost 8 weeks. No need to and I dont want to dry his skin out as it can mess with the balance of natural oils.
We use MCN's, so moogoo is our bum cream of choice but so far he has had no redness. I havent used powder yet, but I have some organic powder that I may use later.
We were given so many lotions and potions as presents before and after he was born that I'm glad we didn't buy anything extra.