I have really oily skin, and i get red really easy. does benzac (benzoyl peroxide) reduce oil and redness?

No magic wand: Treatment of oily skin must be individualized. Benzac is one of the many brands of benzoyl peroxide preparations which do help reduce oil in some people. If you "get red really easily" you may have rosacea, which requires a whole different treatment regimen. A dermatologist can give you a precise diagnosis and a treatment regimen tailored to your individual skin.