If you are using prescription topical medication from your dermatologist I would not recommend using a skin clearing foundation as it will have additional medication in it which may dry out your skin. If your skin is sensitive like mine, it will actually need moisture just as much as it needs acne treatment. I would instead go for a gentle foundation like Neutrogena healthy skin. You may also consider Clinique products... Even though they aren't drugstore they tend To be more affordable then other higher end lines.