Use methods: 1.Open glass bottle cover, put into a grain of block concentrated. 2.Fill up clear water ( recommended tap water ). 3.Lid reset. Description: -Concentrated super auto glass cleaner, than conventional glass water unique -Somatotype small, portable with milk film general size -Use convenient, rinse block plus concentrated use -Performance efficient, a grain of 4 liter equals to general water wiper. -Maintenance wiper windshield, very important is glass water add wiper fine, regular and glass cleaning wiper, concentrated block cleanser, not only have a cleansing effect, also lubricates the glass, greatly reduce the wiper blade and glass friction force, full protection for good glass surface, extend wiper blade service life. glass dry scraping avoid! -Cars rideability treaders rain wiper process, as found in a slight wiper noise, please spray on water wiper, can in to lubricate the role of, and clean glass surface murky. regular maintenance, let your wiper outperforming.