How does this product turn into a liquid if the consistency is a powder? Also, how is the coverage? I have a lot of acne scars and I'm looking for a lightweight foundation that has a nice finish to it. I've been searching the perfect foundation and have tried liquid, mousse, liquid mousse, powder foundations, and BB creams. I've never been fully satisfied with any foundations that I own. If anyone has any suggestions or knows if this liquid powder is any good, please let me know.