If I'm reading your post correctly, you only noticed these white spots (I would bet money that these are Fordyce spots) after the cycle of Protopic. I never had noticeable Fordyce spots either until I used Protopic (everyday for a month or two). The dermatologists didn't believe me when I told them this, but the spots became VERY obvious once I started this regimen. The peeling definitely slowed down, but now they look 10 times worse with the white dots.
Sorry, I can't really offer advice. I just wanted to let you know I had the same experience. I would also appreciate any help.