Hi,
I know that you may know this already, but it dosent harm to let you know that
proactiv is a anti-
acne medication sold OTC.It contains either bezyol peroxide or salicylic acid, both of which have some anti-bacterial properties. however, dryness is a known effect.
For dry skin, you should use gentle soaps, emollients and moisturizers and frequent wash with plain water. Further, avoid the sun with or without the medication on your skin. If this doesnt help you much, visit your doctor.