my name is kareem from egypt ihave a question please i went to the dermatologist and he prescribed me mixing tretinoin 0.05 and benzol peroxide together then apply the mix at night !!! is this mix right or wrong as i searched on the internet and i found that mixing those two cancel the action of them?? Plus he prescribed a solution Contains erythromycin+zinc) to apply twice during day. My case is only comedones acne no inflamed red acne ,i have only blackhead and whiteheads ?? Dont know what to do?? Now my skin is irritated and some redness and near my eye like like a skin burn!!!Please help is this regime worth the suufering thanks a lot