What I find amusing is the persistence and devotion to these various automotive “miracle in a bottles”. Going back in the 80’s it was undercoating, then gas boosters/relead supplements, paint “glazing”, interior plastic treatments, nitrogen in tires, windshield water repellants, beam/silicone wiper blades and currently “boutique” motor oils and ceramic wax/sealers.
Fortunately most of this stuff does no serious damage to your car or your wallet so to quote Homer Simpson, “What the ****, it’s just a buck” but I’m still waiting for my miracle. 