Nothing applied to the glass is going to "strengthen" it to resist chips - increase your following distance! Adam's has a ceramic glass coating that helps resist scratches & keeps it clean.
https://adamspolishes.com/products/g...-glass-coating
There are windshield protective films. XPEL, Windshield Skin, Diamond Shield.
https://www.xpel.com/products/windsh...rotection-film
__________________
____________________________________________
2015 BMW 228i in EstorilBlau II Metallic / Terra Dakota Leather - 6-speed manual, M Sport Package, Cold Weather Package, Lighting Package, Premium Package, Harman Kardon premium sound, Anti-theft alarm system, Blue Metallic Matt Accent Moldings, Aluminum Hexagon Interior Strips, Anthracite Headlining