I just used baby wipes in the end after the first couple of days. They have lotion in them anyways... Tia got a few nappy rashes but mainly around teething times...
As for the bubble baths.. I didn't really use them... Tiny ones rarely get that dirty, so water and oil suffices once a week, top and tail with water every day...
Alternatively, boots did do this lovely bath gel for new born babies... don't know if they still do it, but it makes the babies smell newborn again. I got it as a gift after Tia was born.
I found though, if I bathed Tia more than once a week with any bath gels or shampoos, her skin would dry out really quickly, then crack and sometimes bleed.... She still has a similar problem on her hands and feet nowadays...but we found out that it's dermatitis. Its the sitting them in the water which drys the skin out...