Just for information, I've found that using Ransom aloe pura (aloe Vera gel) with antiseptic tea tree oil, available from Holland and Barrett, to be excellent on cannula sites in my stomach. They help clear up the little red insert spots very well and I TRY to remember to rub some in a couple of times a day
I use neat lavender essential oil on mine. It's well known for helping to reduce starring in burns, I've found that it works well on cannula sites too.