Although the effects of aging and the deformation of the skin and subcutaneous tissues vary from person to person, neck filler application is generally needed starting from the mid-30s, when collagen production in the skin decreases and therefore the skin tends to loosen and sag, and the subcutaneous tissues begin to melt. Neck filler application, which is often combined with interventions on the face and chin, aims to give the person a more elegant and youthful neck appearance.