What To Avoid When Taking Glutathione What are stretch marks?, Stretch marks occur when your skin stretches due to weight gain or loss. It is called a stretch mark because the skin stretches. The stretch begins in the muscle and Stretch Marks: Why They Appear And How To Get Rid Of Them With Sylfirm X Dream Plastic Surgery Stretch marks on the skin, or striae distensae, can result from pregnancy, obesity, or hormonal changes, causing psychological distress in women. So far, there have been no objective scales to define the