Your own genetics of healing are the most important of all the things that go into good (or bad) healing,and good or bad scars. Surgical technique and tension on the closure are pretty much next on the list, and that has to do with your choice of surgeon and how skilled and precise s/he is with suture technique. Use of silicone scar pads or sheets is the only thing that has been scientifically shown to improve scars--all the rest (including the two you mentioned) are "just fine" but none has been shown to make a statistically-significant difference. This is science, not marketing.Furthermore, if you have bad scars, then you will have to talk with your surgeon about revision, so it is wise to consult with him/her in the first place to find out their own protocol and what they do if the scars ARE less than perfect.Remember, there is no magic cream, ointment, unguent, or gel that makes bad scars acceptable. Starting with a surgically-precise and gentle tissue handling closure is the best first step, and frankly, the only really controllable one. The rest is up to genetics and not making a wound worse as it heals and matures, like tanning while still pink and immature. Talk to your surgeon and follow his/her recommendations. Best wishes! Dr. Tholen