Even though it is tempting, slathering on topical medications on numerous times every day won’t clear acne faster. But it will leave your skin super dry and irritated, as will using multiple acne treatments at once (for example, salicylic acid lotion, on top of benzoyl peroxide cream, on top of Retin A gel).
Don’t layer products on your skin. Instead, space applications throughout the day (salicylic acid cleanser in the morning, benzoyl peroxide lotion at night.) If you notice any irritation, scale back use to every other day or drop the second product altogether.
If you are using prescription acne medications, never use an additional acne product without first getting your doctor’s okay.