Dolores, there are probably a number of treatments that substantially minimize stretch marks. I believe a dermatologist can really assist in this area. One important way to prevent or limit stretch marks, especially during pregnancy, is to eat a healthy diet, regularly hydrate with purified water, and frequently apply a natural, pregnancy-approved moisturizer. Actually, products like shea butter, olive oil, cocoa butter, coconut oil, and almond oil rubbed onto the skin are supposed to be very good.
Good luck!