This screen protector can protect the LCD from scratch,if there is ash on it,you can erase it by a cloth ,the LCD can rechange to new. It will not affect the stylus using if you stick the screen protector on LCD. Compatible with: iPad 9.7 (2018) (A1954,A1893),iPad 9.7 (2017) (A1822,A1823),iPad Pro 9.7 (A1673,A1674,A1675),iPad Air 2 (A1566,A1567),iPad Air (A1474,A1475,A1476)