stretch marks appear on the skin most often the hips, abdomen, and breasts from excessive stretching and the rupture of the skins tissue. when skin endures a period of rapid growth, it may cause tearing in the dermis (the elastic middle skin layer). this tearing is actually a form of scarring, called striae. before stretch marks become visible, skin stretching creates inflammation; inflammatory cells activate skin matrix degradation. the pale striae with rough irregularities represent the areas of skin which suffered structural damage. celtrixa is a revolutionary treatment designed to improve the appearance of stretch marks. by infusing skin firming peptides, in association with soothing and anti-inflammatory agents, skin becomes thicker and more uniform.