Why is proactiv burning my face?

I have just started using it and every night it burns like crazy. It burns right now even because i just applied it to my face! I was using this from May-July but then stopped because i didnt think it was doing anything for me but then three days ago i tried it again and now its doing this burning thing that it never did before! So you're definitely not alone. Im going to switch to something different tomorrow because i cant stand the burning.