Stretch marks are lesions that make look like stripes or lines that tend to form in the dermis during period of hormonal flux, with weight gain or loss, weight lifting, pregnancy, puberty and other periods of hormone change. So, stretch marks are not of natural occurrence like most people think. Just like the name which begins with stretch, this marks tend to appear in situations revolving around the skin stretching due to natural or self made body changes.
Again, as much as a lot of people often think stretch marks are not treatable, they in fact are to an extent. They are several treatment types for stretch marks. Amongst them, am familiar with two process which I think are quiet effective. The use of cream base substances and laser removal are the two most popular treatments with the later considered as the most effective of all.
Creams base substances for the treatment of stretch marks is the application of the said on the affected parts of the body in an attempt to lessen or totally get rid of the marks. This is the most popular methods and widely used because it's quiet affordable.
Laser removal on the other hand is less popular and used because it involves high tech process which is a little expensive for most people to afford. I really don't know the exact process of laser removal, I only know it involves a process called photoepilation. This involves the body absorbing emmisions of strong burst of lights at a wave length or color for a specified duration of time. Please don't ask me what this means, i only know it's the most effective means of treating stretch marks.