Quoted from the seller: "▼Features of Heaven's Door▼ ■ Silky smooth texture that surpasses Devil's Tear ■ Moist, glossy shine like a wax finish ■ Chemical resistance that withstands acidic chemicals ■ High water repellency comparable to Devil's Tear 【Application Areas】 Painted surfaces, chrome, headlights, taillights 【Areas Not to Apply】 Glass, resin, rubber 【Durability】 Approximately 3 months" The product has been used, and approximately 80% remains.