When I was playing football and doing a lot more power lifts I never used to wear gloves so I had horrible calluses. After about 4 years the calluses are gone, but it probably is because I haven't power lifted and wear gloves when I lift. Here is an internet post of someone's idea that I guess works...
How to Remove a Callus
Learn How to Remove a Callus Safely
By Blair Mathis, published Oct 04, 2006
Published Content: 546 Total Views: 308,374 Favorited By: 11 CPs
Everyone gets them at one point or another, those annoying nodules of hardened flesh: calluses, corns, and bunions. All these are the results of excessive rubbing/pressure on the affected area, where the body builds up the flesh in an attempt to protect itself. While calluses start out small and rough and nothing more than a nuisance, if left untreated they can become large and painful. After a year or two of rubbing, calluses can become so cracked and damaged that it requires surgery to remove them. If treated soon enough, it can be very simple to remove a callus.
To remove a callus, fill a bucket/tub with the hottest water you can stand and soak the affected limb in it; if the water is extremely hot, you should only have to soak for about 5 minutes. Once the calluses have turned completely white and soft, use a blunt object, such as the dull side of a dinner knife, to scrape at the white calluses. DO NOT use a sharp object, cut, or saw at the callus. You will destroy your skin, cause scarring, and likely cause the callus to return larger than it previously was. After you have scraped off the majority of the dead skin, use a pumice stone to gently sand the area.
After you have scraped the callus until the white is gone, wash the area gently with soap and dry. After the area has thoroughly dried, you will know whether or not the entire callus has been removed. You may have to repeat the removal process two or more times before the calluses are gone.
After you have removed the entire callus, the skin is still likely to feel rough, though not raised. There are several ways to soften the skin. One method is to regularly steam the area. Unless you have the proper equipment, this method will not be effective, and if you do have the right equipment, the process can still be a lengthy one.