Months, if not years, of accumulated grease needs to be removed. This technique seems to be doing the trick, but I really should have been wearing gloves. My fingertips were all wrinkly, but as my hands dried there seems to be some extra tension on the skin on the (somewhat reddish) tips. Perhaps I should have soaked my hands for awhile to get rid of the chemicals and restore balance, but a nap was more pressing...