Protect your glass with GLASSTEC – a durable, hydrophobic coating that repels water and shields against salt, calcium, mineral buildup, and UV damage. Bonds at a molecular level for long-lasting protection. Covers up to 250 sq. ft. (3.2 oz.). Creates a water repellent layer Protects against salt, calcium, and other mineral deposits 3.2 oz. - Glass coverage up to 250 sq. ft. (32 oz. - 2,500 sq. ft.) Appearance: Clear liquid Solubility: 100% in water pH: N/A For use on: Glass, plastic, fiberglass, ceramic, paint, glossy surfaces, hard or semi-hard surfaces.NOTE: Before applying, glass surface MUST be cleaned with DiTEC Crystal Clear, not a household glass cleaner. After Glasstec has been applied, then Crystal Clear or a household glass cleaner may be used for cleaning.Application: Apply using a microfiber applicator pad. See instructional video for application process.