I called the Apple Support and ask screen replacement for my 15.4” 2012 Macbook Retina. They gave me for a $ 800 screen replacement fee. Than I used Mr. Wipes bioHomes and clean coating layer carefully. After 10 minutes, all coating layer gone. For finish, I use Meguiars Glass Cleaner for shining. Now my screen is perfect! After I replace my semi-died battery, I will be more happy.