My girlfriend has an issue with severe blistering on her right instep possibly caused by over pronation and unusual running style that only affects her right leg / foot. She's tried the usual measures, such as gate analysis at the sweat shop, new trainers based on this (over pronate) you can see her right foot visibly kicks out to the right, yet lands on her instep. At the moment she has to run with compede on her instep as she gets severe blistering even when this is used as a preventative measure, i.e. no blister when she applies the compede. She uses sports socks and has even tried using surgical spirits to harden the skin to no avail. Moisture doesnt seam to be an issue as she's only able to run short distances which wouldnt give much time for her foot to sweat - plus, moisture wicking socks are used. As she understands it is friction that is causing the blistering and that it's her arch that suffers most, so with all the above failing, she's tried removing the supporting innersole of the shoe, to remove the point of contact. This has helped however she cant help feel this is not the ideal solution and that this is just a quick fix as blisters do still form, just not as rapidly. I'm wondering if there's any advice that could help her? I'm worried that the unusual bio-mechanics of her right foot strike is the root cause and without looking at this we may not find a solution. Any advice or help greatly appreciated.