Yes, stretch marks do lighten and fade, but not all cases are the same. Meaning the time to fade and lighten them will not be so quickly as one would think. Chemical peels with Acne is the only case in which I have seen this.
Consistany is the key in fading stretch marks and scars, as you continue applying the cream over time you will see results.
I had success with Excel Skin Care's cream. They have a store on Amazon as well and that is were the best prices are. I continue to use their anti aging serums on a regualr basis.