Only 12% of the Iodine is absorbed through the skin, and 88% is wasted via evaporation.
Dr. Brownstein recommends Lugols liquid or iodoral which contains both Iodine and potassium iodide. Both are required in our body. He also recommends taking co-supplements to get Iodine into the cells and toxins out of our cells. See instructions here: https://docs.google.com/document/d/1IzFKo-r2-Nn8_z0KUrOhHdlanzSuhkuV3QO03XF6YTY/edit
You can start with just 1 drop of Lugols daily with co-supplements and titrate slowly if you prefer. Or you can even start with on drop in a glass of water and sip a little each day if you want. The VWT Iodine Forum leaders suggest starting with 100mg daily to speed through detox in minimal time. These are explained in the above file.