Hyaluronic acid is a sugar molecule that is found in the dermis (second layer of skin),  it is a major structural component of our skin, unfortunately we tend to produce less of it as we age,  one of its functions is to attract and hold water therefore it should be applied on moist skin. This product is also being used during microneedling by several providers,
 
This hyaluronic serum effectively retains skin moisture, enhances elasticity, and promotes collagen production.  It should be applied prior to using Justice, as this product is formulated for rapid absorption into the skin within minutes.