Deep stomach line 2 weeks after Vaser Lipo, how can I help it fade? (photo)

This is most likely a postural natural skin fold.  When you sit down this is where your skin folds naturally.  Now that there is a healing process this may become permanent if you do not wear a foam support that prevents the skin from folding.
Having MLD massage can also help.  You also need to keep your posture upright, especially when you sit down.

It most likely will fade as you are still quite soon into your healing stage. Healing, in general, can take up to one month for the majority of swelling to subside, incisions to close, sutures to come out, and for bruising to completely go away. Meantime, wearing a #compression garment may be suggested the first week and then nightly for up to six weeks. Massage of the area may also be beneficial.  Massage is often recommended to improve lumps or swelling experienced among the surgical sites following #liposuction. If deemed beneficial, your doctor will recommend at your post-op follow-up appointments that you self-massage the surgical areas. As for at-home do-it-yourself or spa methods, you should acquire your doctor's #permission before attempting such. If seen necessary, your surgeon may also in-office treatments to further healing the #bruising. In the meanwhile, it is best to remain patient, abide by your surgeon's post-op instructions and ask she or he questions if you ever have concerns. 

Hi ThereI usually recommend a lipo foam board for patients esp on the anterior abdomen so that lines and creases have a much smaller chance of forming.  Lymphatic massages in the early stages will also help and I also recommend adding vela shape or thermi smooth to help with the areas!Speak with your doctor about these adjuncts

I advise my patients to wear a compression garment for 2 weeks after Vaser Lipo at all times except for when they shower and for another two weeks at night only.  One purpose for the garment is to prevent or minimize lines like yours.  If you are not wearing a garment, you should talk to your doctor about that.You can also try heating pads and gentle massage to that area 2-3 times daily.Usually, at two weeks, there is still significant swelling and, with time, lines like this will generally resolve.