never thought about the salt idea, might have to give that a try! this one isn't deep enough to bother me, just add more chalk and go for now. in the xfit days I would bandage a wound in bag balm overnight to heal, but then dry it out all day long during the day because I found that if I let it heal normal without balm, it would shrink/tighten up and then crack open right away, or if I left it bandaged all the time it would stay soft and not harden enough to use without tearing again.If you want that to dry up and heal faster cover it in salt, and then just add a tiny bit of water and then clench it up in your fist and hold on tight for a couple minutes of intense burn. It will dry that fresh pink skin up over the course of the night so it isn't tender and you can get back to lifting comfortably faster. Just be warned although this works and well, it is very painful for a couple minutes while the salt penetrates that newly exposed skin. It basically dries it out and makes it toughen up overnight.
Also, I recommend getting yourself a Pedi-Egg to shave your callouses down regularly. It leaves them smooth but doesn't take of the lower layer of callous. I use mine about every 2-3 weeks an any time I noticed the callous build up getting thick enough to cause it to rip off. Plus any time it gets scratchy so I can still touch my wife.
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i used to use one of these but since I'm not really doing a lot of pull-ups these days or muscle ups etc the callouses don't bother me that much anymore.