Re: my i phone 6s tempered glass screen protector a bit scratch, how can i clean it
Welcome to iMore! If your screen protector is scratched cleaning it will not help. Those things are generally throwaways.
Now, if there's dirt trapped to the adhesive I've heard using sticky tape helps to remove it. Any cloth material will just make it worse.
Re: my i phone 6s tempered glass screen protector a bit scratch, how can i clean it
Yeah they're usually just meant to be bought to protect the screen. You can try contacting who you bought for a replacement since most come with a lifetime warranty.