What is Stretch mark
Stretch marks, or striae, are a form of skin scarring associated with pregnancy, obesity, puberty, and short-term weight gain from bodybuilding and other physical activities. They form when the dermis – the middle layer of the skin that maintains shape and elasticity – is stretched more than it can tolerate. Connective fibers in the skin eventually break, disrupting collagen production and causing scarring. This scarring may be treatable only through stretch mark removal.