I don't know that it is always specifically a question of how long it will take. The question might be whether I am using the right razor. I started off using Sensor, moved to Head Blade, and for the last several years I have been shaving with the M5 Magnum by Personna. If I were to try to go back to the HB I think I might end up investing in a whole bunch of styptic pencils. So maybe experiment with some different razors and blades and maybe some shaving oil and different creams. It might take a while but once you find your combination you're set.