Experience with Lidocaine HCl crystals
I've got a small sample of 99.9% reagent grade lidocaine hcl crystals (hcl makes the lido water soluble) in my possession and I'm experimenting with ways to make a trans-dermal numbing cream or salve or even just a method that's been tried before that worked. The goal is to come up with a method/mix that can take the edge off of implantation or dermal scalpel work... no deep cutting.
I've tried a few things... small amount of water + lido to make a paste, apply paste to skin... wait... not that impressive. I've tried mixing with DMSO... still not impressive. Injections of lidocaine are 1% or 2% if you get the good stuff, mixed with water and sometimes salt (NaCl). Commercial creams can be found that go up to 5% lido, mixed with other junk to make them creams. The skin seems to be doing a dang fine job of keeping out my lido mixtures, which are much higher concentrations than 5%. I'm going to steer completely clear of the idea I could mix up my own injectable batch... not quiet ready to jump that hurdle just yet... I'm really looking for a topical solution.
Does anyone have any ideas or better yet, experience?