You can't. According to Joyaden official website's inquiry, Joyaden hyaluronic acid mainly has four series: elegant, extreme, rich and tiny. Because different cross-linking techniques will produce different softness, the action site and maintenance time are also different. Elegance is the single-phase gel hyaluronic acid with low crosslinking degree in these four series. Its texture is soft, not easy to be absorbed and can be kept for a long time. It mainly acts on the superficial dermis of facial tissue.