See where you put it. Hyaluronic acid is not a solid, it will flow downwards. The effect lasts for two or three years at most. The survival rate of autologous fat filling is low, and you may not achieve the desired effect at one time. Because it has to absorb some metabolism. Hyaluronic acid can be molded at one time. Neither can achieve a permanent effect, but autologous fat is more natural because it is your body.