Stretch Marks are caused by overstretching of the skin, destroying its elasticity and resilience. Often they develop when weight loss follows weight gain, that is why stretch marks are so common post pregnancy. They are caused by the cracks in the elastic surface below, and are not on the surface.
It is difficult to totally get rid of stretch marks after they have formed, therefore preventative care is best. Extracts of turmeric, lemon, and bael fruit have been time tested. The Turmeric Cellulite cream is highly recommended.