Good Product or Nonsense?

OK @inna . Good to know.

No idea if that product works, there are a lot of snake oil cleaning products.
But LAST offers a CD cleaner which is pretty popular. And they have a good track record with their vinyl preservative. 
https://thelastfactory.com/product/last-cd-dvd-cleaner-treatment/

Thanks @inna . Might try the Auric. But not into using a Sharpie on my CDs, many of them are collectables.

Has anybody tried LAST for CDs?
https://thelastfactory.com/product/last-cd-dvd-cleaner-treatment/

Auric Illuminator seems to offer more benefits for SQ improvement than other formulas; more focused and less reflections from the laser.

Is this why both sides of the disc need to be coated?

 @oregonpapa  I use eyeglass lens cleaner and it works well for dust, smudges. Can't say that I've heard an increase in SQ.

 It's not a conditioner as other products claim to be; the coating prevents stray reflections which results in increased focus and also stops static buildup.
No first hand experience, I'm only quoting what's on the websites.

If using alcohol to clean CDs, I believe it should be highly diluted, as in lens cleaner.
And I would worry about preserving the polycarbonate coating if using Windex... 
the S.C. Johnson website lists Windex's ingredients as water, 2-hexoxyethanol, isopropanolamine, sodium dodecylbenzene sulfonate, lauramine oxide, ammonium hydroxide, fragrance, and Liquitint sky blue dye.
I'm not a chemist, so I don't know for sure. 

In any event, what is the consensus with using cleaner/clarifiers on the top (label) side of the disc?

 

ECO 3’ by Nordost on the label side of my rental disks.

This leads me back to my question of applying a coating to the top and bottom of a disc to prevent static buildup while spinning in a transport. The Nordost and Auric make this claim.
I believe lens cleaner and diluted alcohol products make the disc easier to read and more accurate, but i doubt they would be effective in preventing stray reflections and static on a spinning disc.

Any thoughts or experiences regarding efficacy of a single-use spray vs. the products that apply a semi-permanent coating? These products are similar to applying wax to a car.