Thank you for your questions and congratulations on your recent surgery. Every surgeon has different post-op protocol so I would recommend addressing these questions with your Board Certified Plastic Surgeon. With that being said, I apply steri-strips to my patients incisions, and once those come off on their own (3-4 weeks post-op), I recommend my patients start using a 100% silicone based scar cream. If they are going to be in the sun, I also recommend sunscreen so that the scar doesn't pigment while it heals. As far as the waist trainer, this is primarily up to your surgeon. Only he/she knows the details of your surgery, and post-op garments play a huge role in desired results. Set up a visit and discuss what's best for your healing. Good luck and best wishes!