I had breast cancer and reconstructive surgery, so lots of scars. My plastic surgeon told me that it's not actually the lotion that makes a difference, it's the fact that you are rubbing it and increasing the blood flow.
He told me to use any type of lotion that I wanted, even cheap lotion or if I preferred I could just use soap and rub my scars while in the shower. He said not to waste my money on scar creams. He said even rubbing with just your hands will work, but it's easier with some kind of cream or soap.