Lasers little resurface your skin on a microscopic level, it also lessens the depth of the stretch mark by 40%, and the laser also stimulates skin causing new collagen growth.

 

Lasers are the most effective on new symptom; the older the mark is the harder it is to treat. Also darker skin types are harder to treat because of pigment issues. Laser treatment is the perfect treatment for smoothing and toning where scars have existed.

It will take multiple treatments to heal the marks, but you will see improvement almost immediately. There is no such thing as a 100% cure for stretch marks, and if you are genetically predisposition to get them there is not much you can do to prevent them.