For best results, a cream based, non-abrasive soft cleanser works best when cleaning your ThruBlack window.
Non-abrasive soft cleansers tend to work best at removing the subtle marring that can occur due to outdoor elements, as well as subtle interior marring that can happen over time. (Other cleaners, such as glass cleaners and all-purpose cleaners, are not as effective in removing subtle marring.)
Simply apply the cleaner to a soft, dry cloth or sponge, apply to your window’s frame, then wipe clean with a dry cloth. Repeat as often as necessary.
*Note that this cleaning method will remove most marring. Not guaranteed to remove all wear and tear.