Is 5% permethrin the highest that permethrin comes in a lotion application that you can put on your skin while still being safe? I know the chemical is highly dangerous but the 5% lotion does not seem to be working and I used it 3 times 7days apart. Is it me or are these creams completely inneffective? I actually felt sick for a month now moreso because of this treatmetn than the scabies. Dont get me wrong the scabies are driving me nuts but that cream makes you feel weird as well.