Is it bad to use two acne creams at once?
I'm using proactive day and night and Biore midday, can that make my skin worse?
It can be. If they have chemicals that react to one another you could end up with what can be described as a chemical burn on your face. Consult your dermatologist or pharmacist before mixing them.
Sometimes depending on what they are, and if you're skin is sensitive.
ask your pharmacist first.
It might cause your skin to irritate.
Yes if you use to many product your skin will get worse. As well you want to be certain that you have acne. Most people have dry skin so their skin over produces oils causing some pimples. What this skin needs is a good combination skin care system.