A totally waterproof gel (eight hours) that starts clear so won`t leave you looking white and at SPF 40 will be good enough to protect you in the full summer sun.
Most sunscreen you buy on the high street is `water resistant` - means splash your face a few times and it stops working (read the back of the bottle `if swimming reapply every twenty minutes`). If you`re in the water you`ve already doubled your exposure with the reflection - so a sunscreen that`s totally waterproof (8hrs plus for Aloe Gator) is the only option.
All Aloe Gator products are free from some of the nastys found in other sunscreen, are very waterproof and help stop you getting burnt, wrinkled and cancerous.