Lalan HSG is specially designed for removing of hard scale deposits on the Glass / Windshield which is caused due to hard water / rain. To spray Lalan HSG on the Glass / Windshield, leave for 4 to 5 minutes and then to clean under hand pressure with a wiper blade. Once cleaned to clean the glass again with Glass Cleaner - Lalan GLC or Lalan WGC. No machine required and easy to clean + Empty Spray Bottle