Mask off areas you don't want to get it on and be sure to wear disposable gloves.
Its like silicone but thicker and is easy to get all over the place so take your time and be careful what you touch.
Wish I’d used gloves... hands are black! Didn’t work unfortunately, the cheap diffuser is so flexible it doesn’t hold to the shape of the rear bumper. Just kept pulling away from the body, even with tape and holding (picture once I’d given up). So it’s off and my oem S4 diffuser is back on. Need the chrome strip as it looks like crap but I’m not keen to spend stupid money on that.
Will be opening a refund request on Ali express, wish me luck...
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