Ok here is my pennies worth of advice on sunblock.
I have 2 red headed children that burn sooooo easy. I have tried them all.
Beware of waterbabies as if by chance it does get in their eyes it will cause the eyes to swell.
Also I found that it does not work that well. JMHO. If your child does not burn that easily I would suggest 30 spf . However babies and children that burn easily 45spf is the only way to go. For this I have to say hands down that THE NOAD 45spf is the best! As it does not wear off that easily (even in the pool) so you have less applying. I usually apply 2x daily once before we leave the house and then again in about 4 hours. Works great and if by chance it does get in thier eyes it will only sting a bit but as soon as you put water on thier eyes the stinging is gone. You can find the NOAD brand at Wal-Mart cost is about 7.97 for a big bottle. Which if you bought any other brand it would cost about double. 15, 30,45 spf are available.
Tammy