So let's think about this in two different ways. First, superficial fascia is essentially loose connective tissue. It's superficial which implies it's near the surface of the skin and it lays just underneath the fatty tissue substance underneath the skin. It's highly elastic and it has fat content in it which helps it separate the skin from the muscles allowing for a normal sliding action on each other. Deep fascia is well organized and covers the muscles themselves. Deep fascia basically covers the innermost aspect of muscles and creates pockets around each muscle known as myofascial units. If the muscles produce force, the fascia transfers force transmission information from the myofascial units across the joint to create an action.