Stretch marks and scars are two different types of skin imperfections.

Stretch mars

They can be red, purple or white and are most often found on the abdomen, thighs, hips, breasts and buttocks. Stretch marks are caused by rapid stretching of the skin, usually during pregnancy, weight gain or growth spurts. When the skin stretches, the fibers in the middle layer of the skin (the dermis) break, leaving small tears that lead to the formation of stretch marks.

Etirement rapide de la peau

  Scars 

Scars are the result of an injury or damage to the skin and their color can vary from light pink to dark brown. Scars form when the body produces collagen fibers to repair damage to the skin. The appearance of a scar depends on many factors, including the location and severity of the injury, the age and skin type of the person, and the healing process and exposure.