We use Blue Lizard, which is a sunblock, and not a sunscreen, so it's safe on babies of any age. We've found it at CVS, but I just discovered it's cheaper at www.drugstore.com.
Son #1 - September '09 Son #2 - October '11 Son #3 - Hoping to adopt from China some time in 2014!
I use only Blue Lizard (although can't use it on DS -- gives him a rash), Vanicream sunscreen or CoTZ. Got the list from the dermatologist. She normally also recommends Neutrogena baby but that is what gave DD a really bad skin reaction (but not DS -- weird, I know) so can't do that either.
Re: Speaking of sunscreen...
Son #2 - October '11
Son #3 - Hoping to adopt from China some time in 2014!
Our adoption journey: Talkin' 'Bout the Next Generation
This is an old post from last summer and it's the best baby sunscreen thing I've seen!
  Hope the link works - 
https://community.thenest.com/cs/ks/forums/1/53721071/ShowThread.aspx
We use the Neutrogena Senstive Skin.
DD -- 5YO
DS -- 3YO
This is a great post!
We use Neutrogena Pure and Free