Being a guy, I don't mind the scars that make me look like I didn't get out of that biker bar in time back in the 70's when I was visiting San Francisco and renewing an intimate relationship with the biker chief's girlfriend.
Seriously, to get rid of the petrified wood syndrome I used a different Burt's Bee product: the hand salve. My RO swears by it for all his radiation treatments and I had used it with great success the first time around. This time though I started off with Neosporin (you can use any triple strength antibotic cream)on the scars when the staples came out which has miminized them. Then I switched over to the Burt's Bee balm hand salve. You can use it for your scar massage also
Finally, see about getting a prescription for physical therapy for your neck which usually includes both scar massage and exercises. Best of luck to you
Charm