My baby use Coppertone (Pink - bottle). Very good, not sticky. We went to the beach for an hour at noon time. My son didn't get burn. But I burn myself because I forget to wear sunblock. The Coppertone is not expensive, around $75. Also easy to wash out, just bath as normal. But not sure how old can use, I think older than 6 months should be okay. My son is one year old already.