Angus
AspiringProductSpecialist
For this review, I’m going to share my experience using Optimum Opti-Glass Clean & Protect Concentrate:

From Optimum’s Opti-Glass Clean & Protect Concentrate product page:
Optimum Opti-Glass Clean & Protect Concentrate Instructions:
Ok, 1 fresh gallon of DI water coming right up!

Armed with a fresh spray bottle filled up with Optimum Opti-Glass Clean & Protect and a very dirty rear window from winter driving to clean I set out to see just how good this stuff is.


Following the instructions, I spray half of the rear windshield liberally and wipe down with a clean paper towel:

But much to my annoyance, Opti-Glass Clean & Protect doesn’t wipe clean and remains wet:
In order to get the glass dry I need to use extra paper towels – far more then I should had I used a normal glass cleaner. Enter Stoners Invisible Glass for the remaining dirty side:

To be fair, I also apply a liberal amount of Stoners to the remaining dirty side, use the same amount of fresh paper towels, and easily wipe the surface clean with less effort.
Now both sided of the glass are dry and should be crystal clear but the Opti-Glass Clean & Protect side has hazed over:



Ugh! This is annoying. Since the window is now clear of wintery salt residue I try using a clean dry mf glass towel to remove the haze left behind by Opti-Glass Clean & Protect. But all that seems to do is smear things onto the clean Stoners side. The only way I can remove the hazy left by Opti-Glass Clean & Protect is use Stoners on the entire rear windscreen.
Conclusion
Based on the above, I can’t recommend Opti-Glass Clean & Protect. It’s not an easy product to use or remove. For $49.99 the concentrated version is also painfully expensive. Even in follow-up testing when I only used a waffle weave microfiber glass towel to apply and remove Opti-Glass Clean & Protect a hazy surface was still left behind. As far as the water repellent claims, I can’t say I noticed any improvement in wet conditions after applying Opti-Glass Clean & Protect to my windscreen, side windows, or rear window. I should point out, Stoners also makes a "rain repellent" claim - a claim I have yet to witness, but for $5.99 a bottle who cares? Stoners leaves my glass clean and clear with considerable less effort.
Hope this review was helpful – as always please feel free to ask any questions.

From Optimum’s Opti-Glass Clean & Protect Concentrate product page:
Optimum Opti-Glass Clean & Protect Concentrate is a hyper-concentrated glass cleaner that contains a combination of mild cleaners and an advanced polymer that bonds to glass and other silica based surfaces to add water repellency by lowering the surface tension and protect glass by increasing the coefficient of slip. Optimum Opti-Glass Clean & Protect Concentrate can be used as a stand-alone glass sealant or as a booster to Optimum Opti-Glass Coating.
Optimum Opti-Glass Clean & Protect Concentrate Instructions:
1. Dilute Optimum Opti-Glass Clean & Protect with distilled water to make one gallon of ready to use product.
2. Spray liberally on glass surfaces and wipe down with Optimum Glass Towel till glass surface is completely clean.
2. Spray liberally on glass surfaces and wipe down with Optimum Glass Towel till glass surface is completely clean.
Ok, 1 fresh gallon of DI water coming right up!

Armed with a fresh spray bottle filled up with Optimum Opti-Glass Clean & Protect and a very dirty rear window from winter driving to clean I set out to see just how good this stuff is.


Following the instructions, I spray half of the rear windshield liberally and wipe down with a clean paper towel:


But much to my annoyance, Opti-Glass Clean & Protect doesn’t wipe clean and remains wet:

In order to get the glass dry I need to use extra paper towels – far more then I should had I used a normal glass cleaner. Enter Stoners Invisible Glass for the remaining dirty side:

To be fair, I also apply a liberal amount of Stoners to the remaining dirty side, use the same amount of fresh paper towels, and easily wipe the surface clean with less effort.
Now both sided of the glass are dry and should be crystal clear but the Opti-Glass Clean & Protect side has hazed over:



Ugh! This is annoying. Since the window is now clear of wintery salt residue I try using a clean dry mf glass towel to remove the haze left behind by Opti-Glass Clean & Protect. But all that seems to do is smear things onto the clean Stoners side. The only way I can remove the hazy left by Opti-Glass Clean & Protect is use Stoners on the entire rear windscreen.
Conclusion
Based on the above, I can’t recommend Opti-Glass Clean & Protect. It’s not an easy product to use or remove. For $49.99 the concentrated version is also painfully expensive. Even in follow-up testing when I only used a waffle weave microfiber glass towel to apply and remove Opti-Glass Clean & Protect a hazy surface was still left behind. As far as the water repellent claims, I can’t say I noticed any improvement in wet conditions after applying Opti-Glass Clean & Protect to my windscreen, side windows, or rear window. I should point out, Stoners also makes a "rain repellent" claim - a claim I have yet to witness, but for $5.99 a bottle who cares? Stoners leaves my glass clean and clear with considerable less effort.
Hope this review was helpful – as always please feel free to ask any questions.