Using Iodine and water to clean skin

I have recently tried using water with a couple drops of Iodine in it to wash my skin with during the day. It's been so hot here, and I feel like if I get biten by a bug (lots of flies and mosquitoes) it will help keep anything parasitic from taking hold. Does anyone else do this?

I'm also wondering if they have jewelery that can hold some Iodine in it..like a necklace so I can take it with me and if I need to use it while out it's with me.

Prism