Esta Mezcla de $1 Repele la Lluvia Mejor que Rain-X. ¿Por Qué la Industria la Ocultó 40 Años?

Rain-X has been selling the same silicone formula for 40 years, and it only lasts two weeks. Not because there isn't a better option—but because a better option doesn't generate repeat business. White vinegar and cornstarch penetrate the microscopic pores of the glass and create a hydrophobic surface from the inside out. Windshield wipers can't remove it. Washing doesn't wash it off. It costs $1 and lasts for months. In this video, I'll show you: ✅ Why the silicone stays on top of the glass while the cornstarch stays on the inside ✅ The three mistakes that ruin the results, even with the correct formula ✅ The exact mixture: 1 tablespoon of cornstarch per cup of white vinegar ✅ Why 40 years of technical studies confirmed this—and nobody told you 🔎 All you need is: White vinegar + Cornstarch + Spray bottle—less than $2 total