Growth lines generally do not go away on their own. Growth lines, also known as expansion lines, occur when the body grows too fast, resulting in the degeneration of subcutaneous collagen fibers and elastic fibers in the skin at the site of growth, creating a tear-like appearance, so the appearance is mainly manifested as strips of skin with crack-like damage. In the early stages, the appearance may be red, or light red, and in the later stages, it may turn white. For the early stages of growth lines, red and blue light can be used, or topical restorative creams, such as Mucopolysaccharides Polysulfate Cream, can be applied externally.