What this site is for
This is patient education about stretch marks, published by Chongqing West District Hospital, a tertiary general hospital in Jiulongpo District, Chongqing. It is a concern guide rather than a procedure page: it answers why the skin tore, whether anything needs doing about it, and which of several paths applies. The devices and operations offered for a mark are explained on their own sites in this cluster, and repeating them here would help nobody.
The distinction the site is built on
A stretch mark is a tear in the dermis. The fibres that give skin its recoil have given way and have not been replaced, and the mark is the scar that formed there. Almost every disappointment in this area comes from treating it as a surface problem: a product that sits on the surface, a device that reaches a fraction of a millimetre, or a promise of removal. The stage of the mark — red and still active, or pale and finished — is the second distinction, and it decides more than the choice of treatment does.
What it deliberately does not do
It does not name products or brands, quote prices or dosages, or promise a result. It does not present a cream as a way of preventing stretch marks in pregnancy, because the evidence for that is not there. It does not describe device settings, and it does not tell you how many sessions you will need, because that depends on a mark and a skin that no website has examined. It is written so that a reasonable reader can decide against treatment after reading it.
The limits of a website
Nothing here can tell you what caused your own marks, whether they have finished fading, or whether your skin will darken rather than lighten after a laser session. Those answers come from looking at the skin and asking about the history around it, which takes minutes in person and cannot be taken from a photograph. Use this site to arrive at an assessment with better questions, and treat any answer you receive here as general information rather than as advice about you.