Just put the sunscreen on when you wake up. As long as you've given it time (30mins or so) to absorb, it'll not run in to your eyes. Re-apply soon after getting up from the first dive (if you're making a second dive). It'll absorb during the surface interval.
I also have a family history of malignant melanoma. In NZ and Australia it is common enough and kids are usually required to 'slip, slop, slap' before playing outside during summer. Some schools require a wide-brimmed hat as a uniform for youngsters. I've been burnt silly playing golf in NZ when I forgot to put sunscreen on the back of my neck. That took about 15mins of Southland sun- it can be fierce. By contrast the Maldives sun is tame and I hardly ever get burnt here.
Sunscreen works, but of course if you sit in the sun for a few hours, you'll burn crispy.
I also have a family history of malignant melanoma. In NZ and Australia it is common enough and kids are usually required to 'slip, slop, slap' before playing outside during summer. Some schools require a wide-brimmed hat as a uniform for youngsters. I've been burnt silly playing golf in NZ when I forgot to put sunscreen on the back of my neck. That took about 15mins of Southland sun- it can be fierce. By contrast the Maldives sun is tame and I hardly ever get burnt here.
Sunscreen works, but of course if you sit in the sun for a few hours, you'll burn crispy.