After dealing with Hashimoto's for years and trying to manage all the symptoms, one of the things I did was intentionally use all natural skin care products.  I sold all natural skin care as a consultant for four years before branching out and starting my own line.  I currently have three products that I stand by.  I use the highest quality ingredients and the only ingredient I add that isn't 100% natural are my scents (unless it is labeled as unscented or made with essential oils).