I am not a doctor and I am not sure how to answer the questions you guys have. I don't have an education in the product in question, or in foot medicine, but I do have experience with pretty feet. This is my review for what I think will help you get prettier feet on the cheap. I have not tested any of the products myself, so you can use what I write here as a guideline.
1. Wear shoes that fit your feet the right way, with the sole of your foot flat.
2. Do not wear your shoes in a way that hurts. The best place to test is with shoes. If your feet are in pain, you will not notice. If you have to wear your shoes on your head and you can't even put them on, you are hurting. 3. Always wear socks with socks that don't slip over your foot and over your shoe. 4. Do not be afraid to try something different. Try it with a pair of socks you can change into and the ones that don't. If you can't change them, wear the same ones. 5. Try to do your laundry right away if you have to.