Benzaclin isn't strong enough to bleach your hair. I haven't had it bleach my pillow, but I think that it could. My brother uses it and when he sweats it bleaches the colars of his shirts, and when I put it on my back, it bleaches my shirts.

I've been using Benzaclin since August of this year. I tried Proactiv a few summers ago and it broke my face out worse than it was before use. So far, I only have one complaint concerning Benzaclin, I can't really stand that it gives my face a dull appearance but I try to exfoliate with an exfoliating pad using the Benziq wash that I was also prescribed. If I were you I would definitely change from using Benzaclin at night because it does seem to bleach clothing and I think the bleaching may be activated by sweat. When I was taking classes this past summer and was sitting in my car with the windows down (b/c gas prices were so high no one wanted to turn on their AC and risk burning up their gas) I did notice after washing and drying the shirts that were worn on those days, they were bleached (I use Benzaclin on my upper arms, chest and top of my back). I would definitely use some other type of treatment (for me, I use Ziana, in my opinion, seems to do a better job than the benzalin - I used this first before the pharmacy at Kaiser could obtain the prescription for Benzaclin, this took about 2 weeks and it seemed to give the same effects as Benzaclin, minus the dullness) in the evenings. I've never tried Benzaclin overnight, partly because I was not prescribed to do so and because I sweat at night, no matter the temperature, and I definitely don't want to ruin my good bedsheets. So far, this seems to be a good product, I've been "battling" acne for the past 12+ years. Just keep up with a daily regimen.