I agree with PigPen and SLYinKC.
With all of the products, less is definitely more (for me at least). Try skipping a day or two while your head gets "seasoned" and the irritation should subside. You sacrifice the a day of slick smoothness, but eventually, the bumps will even out and you can get back to the daily shave. Also, I notice if I don't drink enough water, it affects my dry skin factor big time.