Don’t use it on old single pane glass. I wrecked one with that acid. It’s not that good.
I have a bottle in the van, it’s been there for at least ten years. You certainly don’t need a video link to show how to use it.
And it sounds like you ( have not used it properly) there more then just putting it on the glass and scrubbing.
Here is a brief look what it is used for.
Much of what happens to glass is so gradual that one does not often see anything wrong with the window.
It is not until the window is washed and the haze remains, that the damage is noticed.
Part of the visible haze may be mineral deposits, structure runoff, pollution in the air or other contaminates, which attach tenaciously to the glass.
Such deposits damage glass and do not readily come off with just regular washing.
Overtime these surface deposits and etching of the glass can be perceived as cloudiness or hazing.
This is known as stage I and stage II corrosion. Stage I corrosion can be cleared so that visibility is restored to the glass.
Stage II corrosion may look hazy, white or even in some cases clear, as it holds on to the damaged particles until they are released by cleaning or clearing the glass.
Cloudiness occurs because the light is refracted irregularly as it passes through the irregular surface of the damaged glass.
This refracted light appears to the human eye, without magnification, as a general whitening or haziness of the glass.
CRYSTAL CLEAR 550 will clear away only mineral deposits and damaged glass from the surface and may expose stage II corrosion.
Stage II corrosion is usually not correctable using compounds such as CRYSTAL CLEAR 550 and can be made worse by any attempt to clear.
(That is why the product label and literature expresses to test every window before clearing.) If the pre-existing damage is substantial then mechanical polishing or glass replacement may be necessary.
