What sunscreen lotion can I use for a 1 month old baby

I actually don't know that there is any sunscreen that is safe for use on a baby that is as young as yours is. However, when my children were small and summer came along (they were eight months and six months old when their first summers hit) I used Waterbabies sunscreen for them because that was the one that seemed to be the most natural. It was also the only sunscreen that I could find with a very high sun protection factor in it.