this is a prescription numbing cream that has to be made by a compounding pharmacist. i used it a few yrs. ago while getting cosmetic procedures on my face. moved to a very small town since then, & no one is familiar with this cream. my dr wrote new script for me as a favor because i'm going to get laser hair removal. the pharmacist needs specifics on the ingrediants, etc. to be able to make this up for me. benz/lido/tetra 20/8/4 gel is how it is written on the label of my original script, & that is how my dr wrote it. info greatly appreciated