OK, we can get 50 Spf sun block. For children and those with super sensitive skin. Some of it claims to be waterproof. Many foundation make ups contain a sunblock. In the States, people do with tape on purpose what Liz did accidentally....temp. tattoo. No, I don't do make up either. Sun block at the lake, even in the shade because of the light reflected off the water.

Never tried yogurt, but raw potatoe juice is good for sunburn too. As is, of course, Aloe Vera juice.