Reddit reviews Natural Volcanic rock / Foot stone / remove horny calluses / bath stone / exfoliate

Here's what I use:

Nonwoven cotton swabs (these are just generally amazing, get a bunch, much better than paper towels and paper handkerchiefs of all kinds).
http://www.premierhh.co.uk/media/catalog/product/cache/1/image/8dbb5fbb4fdc291894c5da1d814bac33/n/o/non-woven.jpg
Hydrogen Peroxide
Hobby Scalpel
Hobby Cutter
http://www.sunwardhobbies.ca/sites/default/files/imagecache/product_full/sprue-cutters-excel-hobby-blade.jpg
Volcanic rock
https://www.amazon.com/Natural-Volcanic-remove-calluses-exfoliate/dp/B00BRQEJ44?ie=UTF8&*Version*=1&*entries*=0
Sharp light

The hobby cutter needs a very small set of 'scissors', nice long handles. Wash tools in water. Clean the callus and your tools in hydrogen peroxide, using the swabs, wash in water again and dry them. Make a small incission on either side of the callus. Now keep the skin taught, and use the cutter for a clean cut all the way through. Don't pick at it, just nib off any excess scabs with the cutter. Make more cuts for big calluses.

Finish off your work with the volcanic rock, clean your tools using the hydrogen peroxide again, dry them off, and put 'em somewhere clean.

This is very similar to using nail clippers or razor blades, but it's important that you can get into your bloodstream if you go too deep, so that's why you should clean 'em - the hydrogen peroxide is an acid, and will not only disinfect but also clean off rust. These tools are also much better at the job. Don't give yourself scars or an infection. Tetanus is real yo.

Be advised that if you remove skin like this, your skin will be softer and more sensitive for a while. Calluses are not always a bad thing.