QMadix liquid screen protector

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Anyone tried this? I would only be interested in using it to give additional scratch resistance to the display. I certainly don't buy that it would make it almost shatterproof as they suggest. Costco was trying to sell me a package deal in which they apply the treatment and include a generic clear case for $40. I can get just the treatment on eBay for about $25.

Invisible First-Defense Liquid Glass Screen Protector | Qmadix